Finding the Fourth Proportional to 25,487.83, 35,175.98 and 15,421.82

Step by Step Solution

1. Step 1: Write the proportion equation
   25,487.83 : 35,175.98 = 15,421.82 : x
2. Step 2: Convert to fraction form
   25,487.83/35,175.98 = 15,421.82/x
3. Step 3: Cross multiply
   25,487.83x = 35,175.98 × 15,421.82
4. Step 4: Simplify right side
   25,487.83x = 542,477,642.71
5. Step 5: Solve for x
   x = 542,477,642.71/25,487.83
6. Step 6: Final answer
   x = 21,283.79