Finding the Fourth Proportional to 22,688,261.09, 31,312,447.31 and 12,900,171.88

Step by Step Solution

1. Step 1: Write the proportion equation
   22,688,261.09 : 31,312,447.31 = 12,900,171.88 : x
2. Step 2: Convert to fraction form
   22,688,261.09/31,312,447.31 = 12,900,171.88/x
3. Step 3: Cross multiply
   22,688,261.09x = 31,312,447.31 × 12,900,171.88
4. Step 4: Simplify right side
   22,688,261.09x = 403,935,952,061,380.56
5. Step 5: Solve for x
   x = 403,935,952,061,380.56/22,688,261.09
6. Step 6: Final answer
   x = 17,803,742.23