Finding the Fourth Proportional to 12,353.18, 18,534.52 and 7,426.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,353.18 : 18,534.52 = 7,426.22 : x
2. Step 2: Convert to fraction form
   12,353.18/18,534.52 = 7,426.22/x
3. Step 3: Cross multiply
   12,353.18x = 18,534.52 × 7,426.22
4. Step 4: Simplify right side
   12,353.18x = 137,641,423.11
5. Step 5: Solve for x
   x = 137,641,423.11/12,353.18
6. Step 6: Final answer
   x = 11,142.19