Finding the Fourth Proportional to 12,587.16, 18,883.56 and 3,702.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,587.16 : 18,883.56 = 3,702.72 : x
2. Step 2: Convert to fraction form
   12,587.16/18,883.56 = 3,702.72/x
3. Step 3: Cross multiply
   12,587.16x = 18,883.56 × 3,702.72
4. Step 4: Simplify right side
   12,587.16x = 69,920,535.28
5. Step 5: Solve for x
   x = 69,920,535.28/12,587.16
6. Step 6: Final answer
   x = 5,554.91