Finding the Fourth Proportional to 23,599.57, 32,566.17 and 12,987.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,599.57 : 32,566.17 = 12,987.15 : x
2. Step 2: Convert to fraction form
   23,599.57/32,566.17 = 12,987.15/x
3. Step 3: Cross multiply
   23,599.57x = 32,566.17 × 12,987.15
4. Step 4: Simplify right side
   23,599.57x = 422,941,734.72
5. Step 5: Solve for x
   x = 422,941,734.72/23,599.57
6. Step 6: Final answer
   x = 17,921.59