Finding the Fourth Proportional to 12,913,167.54, 17,818,852.56 and 7,950,820.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,913,167.54 : 17,818,852.56 = 7,950,820.80 : x
2. Step 2: Convert to fraction form
   12,913,167.54/17,818,852.56 = 7,950,820.80/x
3. Step 3: Cross multiply
   12,913,167.54x = 17,818,852.56 × 7,950,820.80
4. Step 4: Simplify right side
   12,913,167.54x = 141,674,503,566,181.22
5. Step 5: Solve for x
   x = 141,674,503,566,181.22/12,913,167.54
6. Step 6: Final answer
   x = 10,971,320.80