Finding the Fourth Proportional to 13,156.18, 18,149.43 and 7,563.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,156.18 : 18,149.43 = 7,563.94 : x
2. Step 2: Convert to fraction form
   13,156.18/18,149.43 = 7,563.94/x
3. Step 3: Cross multiply
   13,156.18x = 18,149.43 × 7,563.94
4. Step 4: Simplify right side
   13,156.18x = 137,281,182.55
5. Step 5: Solve for x
   x = 137,281,182.55/13,156.18
6. Step 6: Final answer
   x = 10,434.73