Finding the Fourth Proportional to 22,620.02, 31,215.82 and 12,549.11

Step by Step Solution

1. Step 1: Write the proportion equation
   22,620.02 : 31,215.82 = 12,549.11 : x
2. Step 2: Convert to fraction form
   22,620.02/31,215.82 = 12,549.11/x
3. Step 3: Cross multiply
   22,620.02x = 31,215.82 × 12,549.11
4. Step 4: Simplify right side
   22,620.02x = 391,730,805.59
5. Step 5: Solve for x
   x = 391,730,805.59/22,620.02
6. Step 6: Final answer
   x = 17,317.88