Finding the Fourth Proportional to 22,523.60, 31,082.56 and 12,587.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,523.60 : 31,082.56 = 12,587.60 : x
2. Step 2: Convert to fraction form
   22,523.60/31,082.56 = 12,587.60/x
3. Step 3: Cross multiply
   22,523.60x = 31,082.56 × 12,587.60
4. Step 4: Simplify right side
   22,523.60x = 391,254,832.26
5. Step 5: Solve for x
   x = 391,254,832.26/22,523.60
6. Step 6: Final answer
   x = 17,370.88