Finding the Fourth Proportional to 22,253.38, 30,713.10 and 12,693.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,253.38 : 30,713.10 = 12,693.29 : x
2. Step 2: Convert to fraction form
   22,253.38/30,713.10 = 12,693.29/x
3. Step 3: Cross multiply
   22,253.38x = 30,713.10 × 12,693.29
4. Step 4: Simplify right side
   22,253.38x = 389,850,068.07
5. Step 5: Solve for x
   x = 389,850,068.07/22,253.38
6. Step 6: Final answer
   x = 17,518.69