Finding the Fourth Proportional to 39,264.42, 54,185.27 and 21,359.82

Step by Step Solution

1. Step 1: Write the proportion equation
   39,264.42 : 54,185.27 = 21,359.82 : x
2. Step 2: Convert to fraction form
   39,264.42/54,185.27 = 21,359.82/x
3. Step 3: Cross multiply
   39,264.42x = 54,185.27 × 21,359.82
4. Step 4: Simplify right side
   39,264.42x = 1,157,387,613.85
5. Step 5: Solve for x
   x = 1,157,387,613.85/39,264.42
6. Step 6: Final answer
   x = 29,476.75