Finding the Fourth Proportional to 8,729.46, 12,050.78 and 5,587.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,729.46 : 12,050.78 = 5,587.47 : x
2. Step 2: Convert to fraction form
   8,729.46/12,050.78 = 5,587.47/x
3. Step 3: Cross multiply
   8,729.46x = 12,050.78 × 5,587.47
4. Step 4: Simplify right side
   8,729.46x = 67,333,343.79
5. Step 5: Solve for x
   x = 67,333,343.79/8,729.46
6. Step 6: Final answer
   x = 7,713.35