Finding the Fourth Proportional to 12,200.30, 18,303.50 and 5,631.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200.30 : 18,303.50 = 5,631.08 : x
2. Step 2: Convert to fraction form
   12,200.30/18,303.50 = 5,631.08/x
3. Step 3: Cross multiply
   12,200.30x = 18,303.50 × 5,631.08
4. Step 4: Simplify right side
   12,200.30x = 103,068,472.78
5. Step 5: Solve for x
   x = 103,068,472.78/12,200.30
6. Step 6: Final answer
   x = 8,448.03