Finding the Fourth Proportional to 39,200.47, 54,096.69 and 21,295.47

Step by Step Solution

1. Step 1: Write the proportion equation
   39,200.47 : 54,096.69 = 21,295.47 : x
2. Step 2: Convert to fraction form
   39,200.47/54,096.69 = 21,295.47/x
3. Step 3: Cross multiply
   39,200.47x = 54,096.69 × 21,295.47
4. Step 4: Simplify right side
   39,200.47x = 1,152,014,438.99
5. Step 5: Solve for x
   x = 1,152,014,438.99/39,200.47
6. Step 6: Final answer
   x = 29,387.77