Finding the Fourth Proportional to 21,526.50, 29,707.22 and 13,030.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,526.50 : 29,707.22 = 13,030.18 : x
2. Step 2: Convert to fraction form
   21,526.50/29,707.22 = 13,030.18/x
3. Step 3: Cross multiply
   21,526.50x = 29,707.22 × 13,030.18
4. Step 4: Simplify right side
   21,526.50x = 387,090,423.90
5. Step 5: Solve for x
   x = 387,090,423.90/21,526.50
6. Step 6: Final answer
   x = 17,982.04