Finding the Fourth Proportional to 22,708,443.60, 31,333,460.58 and 12,918,315.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,708,443.60 : 31,333,460.58 = 12,918,315.96 : x
2. Step 2: Convert to fraction form
   22,708,443.60/31,333,460.58 = 12,918,315.96/x
3. Step 3: Cross multiply
   22,708,443.60x = 31,333,460.58 × 12,918,315.96
4. Step 4: Simplify right side
   22,708,443.60x = 404,775,543,892,644.88
5. Step 5: Solve for x
   x = 404,775,543,892,644.88/22,708,443.60
6. Step 6: Final answer
   x = 17,824,891.53