Finding the Fourth Proportional to 25,979.31, 35,842.95 and 15,897.24

Step by Step Solution

1. Step 1: Write the proportion equation
   25,979.31 : 35,842.95 = 15,897.24 : x
2. Step 2: Convert to fraction form
   25,979.31/35,842.95 = 15,897.24/x
3. Step 3: Cross multiply
   25,979.31x = 35,842.95 × 15,897.24
4. Step 4: Simplify right side
   25,979.31x = 569,803,978.46
5. Step 5: Solve for x
   x = 569,803,978.46/25,979.31
6. Step 6: Final answer
   x = 21,932.99