Finding the Fourth Proportional to 8,122.10, 12,152.76 and 5,787.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,122.10 : 12,152.76 = 5,787.50 : x
2. Step 2: Convert to fraction form
   8,122.10/12,152.76 = 5,787.50/x
3. Step 3: Cross multiply
   8,122.10x = 12,152.76 × 5,787.50
4. Step 4: Simplify right side
   8,122.10x = 70,334,098.50
5. Step 5: Solve for x
   x = 70,334,098.50/8,122.10
6. Step 6: Final answer
   x = 8,659.60