Finding the Fourth Proportional to 10,278.32, 15,404.94 and 5,587.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,278.32 : 15,404.94 = 5,587.16 : x
2. Step 2: Convert to fraction form
   10,278.32/15,404.94 = 5,587.16/x
3. Step 3: Cross multiply
   10,278.32x = 15,404.94 × 5,587.16
4. Step 4: Simplify right side
   10,278.32x = 86,069,864.57
5. Step 5: Solve for x
   x = 86,069,864.57/10,278.32
6. Step 6: Final answer
   x = 8,373.92