Finding the Fourth Proportional to 13,158.29, 18,156.34 and 7,493.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,158.29 : 18,156.34 = 7,493.15 : x
2. Step 2: Convert to fraction form
   13,158.29/18,156.34 = 7,493.15/x
3. Step 3: Cross multiply
   13,158.29x = 18,156.34 × 7,493.15
4. Step 4: Simplify right side
   13,158.29x = 136,048,069.56
5. Step 5: Solve for x
   x = 136,048,069.56/13,158.29
6. Step 6: Final answer
   x = 10,339.34