Finding the Fourth Proportional to 13,113.96, 18,098.52 and 8,081.55

Step by Step Solution

1. Step 1: Write the proportion equation
   13,113.96 : 18,098.52 = 8,081.55 : x
2. Step 2: Convert to fraction form
   13,113.96/18,098.52 = 8,081.55/x
3. Step 3: Cross multiply
   13,113.96x = 18,098.52 × 8,081.55
4. Step 4: Simplify right side
   13,113.96x = 146,264,094.31
5. Step 5: Solve for x
   x = 146,264,094.31/13,113.96
6. Step 6: Final answer
   x = 11,153.31