Finding the Fourth Proportional to 6,365.55, 8,784.28 and 3,712.78

Step by Step Solution

1. Step 1: Write the proportion equation
   6,365.55 : 8,784.28 = 3,712.78 : x
2. Step 2: Convert to fraction form
   6,365.55/8,784.28 = 3,712.78/x
3. Step 3: Cross multiply
   6,365.55x = 8,784.28 × 3,712.78
4. Step 4: Simplify right side
   6,365.55x = 32,614,099.10
5. Step 5: Solve for x
   x = 32,614,099.10/6,365.55
6. Step 6: Final answer
   x = 5,123.53