Finding the Fourth Proportional to 39,200.71, 54,097.35 and 21,296.06

Step by Step Solution

1. Step 1: Write the proportion equation
   39,200.71 : 54,097.35 = 21,296.06 : x
2. Step 2: Convert to fraction form
   39,200.71/54,097.35 = 21,296.06/x
3. Step 3: Cross multiply
   39,200.71x = 54,097.35 × 21,296.06
4. Step 4: Simplify right side
   39,200.71x = 1,152,060,411.44
5. Step 5: Solve for x
   x = 1,152,060,411.44/39,200.71
6. Step 6: Final answer
   x = 29,388.76