Finding the Fourth Proportional to 39,080.52, 53,931.15 and 21,175.52

Step by Step Solution

1. Step 1: Write the proportion equation
   39,080.52 : 53,931.15 = 21,175.52 : x
2. Step 2: Convert to fraction form
   39,080.52/53,931.15 = 21,175.52/x
3. Step 3: Cross multiply
   39,080.52x = 53,931.15 × 21,175.52
4. Step 4: Simplify right side
   39,080.52x = 1,142,019,875.79
5. Step 5: Solve for x
   x = 1,142,019,875.79/39,080.52
6. Step 6: Final answer
   x = 29,222.23