Finding the Fourth Proportional to 8,772.95, 12,108.03 and 5,587.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,772.95 : 12,108.03 = 5,587.61 : x
2. Step 2: Convert to fraction form
   8,772.95/12,108.03 = 5,587.61/x
3. Step 3: Cross multiply
   8,772.95x = 12,108.03 × 5,587.61
4. Step 4: Simplify right side
   8,772.95x = 67,654,933.50
5. Step 5: Solve for x
   x = 67,654,933.50/8,772.95
6. Step 6: Final answer
   x = 7,711.77