Finding the Fourth Proportional to 22,779,499.24, 31,435,688.46 and 12,858,470.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,779,499.24 : 31,435,688.46 = 12,858,470.64 : x
2. Step 2: Convert to fraction form
   22,779,499.24/31,435,688.46 = 12,858,470.64/x
3. Step 3: Cross multiply
   22,779,499.24x = 31,435,688.46 × 12,858,470.64
4. Step 4: Simplify right side
   22,779,499.24x = 404,214,877,111,096.88
5. Step 5: Solve for x
   x = 404,214,877,111,096.88/22,779,499.24
6. Step 6: Final answer
   x = 17,744,677.92