Finding the Fourth Proportional to 12,288.42, 18,426.12 and 5,359.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,288.42 : 18,426.12 = 5,359.14 : x
2. Step 2: Convert to fraction form
   12,288.42/18,426.12 = 5,359.14/x
3. Step 3: Cross multiply
   12,288.42x = 18,426.12 × 5,359.14
4. Step 4: Simplify right side
   12,288.42x = 98,748,156.74
5. Step 5: Solve for x
   x = 98,748,156.74/12,288.42
6. Step 6: Final answer
   x = 8,035.87