Finding the Fourth Proportional to 38,152.50, 52,655.31 and 21,385.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,152.50 : 52,655.31 = 21,385.50 : x
2. Step 2: Convert to fraction form
   38,152.50/52,655.31 = 21,385.50/x
3. Step 3: Cross multiply
   38,152.50x = 52,655.31 × 21,385.50
4. Step 4: Simplify right side
   38,152.50x = 1,126,060,132.01
5. Step 5: Solve for x
   x = 1,126,060,132.01/38,152.50
6. Step 6: Final answer
   x = 29,514.71