Finding the Fourth Proportional to 22,688,304.61, 31,312,507.38 and 12,900,215.41

Step by Step Solution

1. Step 1: Write the proportion equation
   22,688,304.61 : 31,312,507.38 = 12,900,215.41 : x
2. Step 2: Convert to fraction form
   22,688,304.61/31,312,507.38 = 12,900,215.41/x
3. Step 3: Cross multiply
   22,688,304.61x = 31,312,507.38 × 12,900,215.41
4. Step 4: Simplify right side
   22,688,304.61x = 403,938,090,229,214.69
5. Step 5: Solve for x
   x = 403,938,090,229,214.69/22,688,304.61
6. Step 6: Final answer
   x = 17,803,802.32