Finding the Fourth Proportional to 22,659.53, 31,268.81 and 12,587.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,659.53 : 31,268.81 = 12,587.39 : x
2. Step 2: Convert to fraction form
   22,659.53/31,268.81 = 12,587.39/x
3. Step 3: Cross multiply
   22,659.53x = 31,268.81 × 12,587.39
4. Step 4: Simplify right side
   22,659.53x = 393,592,487.02
5. Step 5: Solve for x
   x = 393,592,487.02/22,659.53
6. Step 6: Final answer
   x = 17,369.85