Finding the Fourth Proportional to 38,499, 53,129.10 and 21,732.12

Step by Step Solution

1. Step 1: Write the proportion equation
   38,499 : 53,129.10 = 21,732.12 : x
2. Step 2: Convert to fraction form
   38,499/53,129.10 = 21,732.12/x
3. Step 3: Cross multiply
   38,499x = 53,129.10 × 21,732.12
4. Step 4: Simplify right side
   38,499x = 1,154,607,976.69
5. Step 5: Solve for x
   x = 1,154,607,976.69/38,499
6. Step 6: Final answer
   x = 29,990.60