Finding the Fourth Proportional to 6,113.48, 8,436.57 and 3,318.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,113.48 : 8,436.57 = 3,318.98 : x
2. Step 2: Convert to fraction form
   6,113.48/8,436.57 = 3,318.98/x
3. Step 3: Cross multiply
   6,113.48x = 8,436.57 × 3,318.98
4. Step 4: Simplify right side
   6,113.48x = 28,000,807.10
5. Step 5: Solve for x
   x = 28,000,807.10/6,113.48
6. Step 6: Final answer
   x = 4,580.17