Finding the Fourth Proportional to 12,384.64, 18,575.04 and 3,617.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,384.64 : 18,575.04 = 3,617.76 : x
2. Step 2: Convert to fraction form
   12,384.64/18,575.04 = 3,617.76/x
3. Step 3: Cross multiply
   12,384.64x = 18,575.04 × 3,617.76
4. Step 4: Simplify right side
   12,384.64x = 67,200,036.71
5. Step 5: Solve for x
   x = 67,200,036.71/12,384.64
6. Step 6: Final answer
   x = 5,426.08