Finding the Fourth Proportional to 25,335.17, 34,965.48 and 21,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,335.17 : 34,965.48 = 21,078.72 : x
2. Step 2: Convert to fraction form
   25,335.17/34,965.48 = 21,078.72/x
3. Step 3: Cross multiply
   25,335.17x = 34,965.48 × 21,078.72
4. Step 4: Simplify right side
   25,335.17x = 737,027,562.59
5. Step 5: Solve for x
   x = 737,027,562.59/25,335.17
6. Step 6: Final answer
   x = 29,091.09