Finding the Fourth Proportional to 10,587.72, 15,876.18 and 5,656.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,587.72 : 15,876.18 = 5,656.08 : x
2. Step 2: Convert to fraction form
   10,587.72/15,876.18 = 5,656.08/x
3. Step 3: Cross multiply
   10,587.72x = 15,876.18 × 5,656.08
4. Step 4: Simplify right side
   10,587.72x = 89,796,944.17
5. Step 5: Solve for x
   x = 89,796,944.17/10,587.72
6. Step 6: Final answer
   x = 8,481.24