Finding the Fourth Proportional to 13,152.70, 18,131.84 and 8,113.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,152.70 : 18,131.84 = 8,113.52 : x
2. Step 2: Convert to fraction form
   13,152.70/18,131.84 = 8,113.52/x
3. Step 3: Cross multiply
   13,152.70x = 18,131.84 × 8,113.52
4. Step 4: Simplify right side
   13,152.70x = 147,113,046.48
5. Step 5: Solve for x
   x = 147,113,046.48/13,152.70
6. Step 6: Final answer
   x = 11,185.01