Finding the Fourth Proportional to 8,784.05, 12,123.15 and 5,008.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,784.05 : 12,123.15 = 5,008.58 : x
2. Step 2: Convert to fraction form
   8,784.05/12,123.15 = 5,008.58/x
3. Step 3: Cross multiply
   8,784.05x = 12,123.15 × 5,008.58
4. Step 4: Simplify right side
   8,784.05x = 60,719,766.63
5. Step 5: Solve for x
   x = 60,719,766.63/8,784.05
6. Step 6: Final answer
   x = 6,912.50