Finding the Fourth Proportional to 22,616.31, 31,210.31 and 13,058.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,616.31 : 31,210.31 = 13,058.21 : x
2. Step 2: Convert to fraction form
   22,616.31/31,210.31 = 13,058.21/x
3. Step 3: Cross multiply
   22,616.31x = 31,210.31 × 13,058.21
4. Step 4: Simplify right side
   22,616.31x = 407,550,892.82
5. Step 5: Solve for x
   x = 407,550,892.82/22,616.31
6. Step 6: Final answer
   x = 18,020.22