Finding the Fourth Proportional to 12,631.52, 17,426.40 and 8,384.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,631.52 : 17,426.40 = 8,384.64 : x
2. Step 2: Convert to fraction form
   12,631.52/17,426.40 = 8,384.64/x
3. Step 3: Cross multiply
   12,631.52x = 17,426.40 × 8,384.64
4. Step 4: Simplify right side
   12,631.52x = 146,114,090.50
5. Step 5: Solve for x
   x = 146,114,090.50/12,631.52
6. Step 6: Final answer
   x = 11,567.42