Finding the Fourth Proportional to 22,088.31, 30,471.79 and 13,130.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,088.31 : 30,471.79 = 13,130.71 : x
2. Step 2: Convert to fraction form
   22,088.31/30,471.79 = 13,130.71/x
3. Step 3: Cross multiply
   22,088.31x = 30,471.79 × 13,130.71
4. Step 4: Simplify right side
   22,088.31x = 400,116,237.67
5. Step 5: Solve for x
   x = 400,116,237.67/22,088.31
6. Step 6: Final answer
   x = 18,114.39