Finding the Fourth Proportional to 13,098.59, 18,077.31 and 8,065.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,098.59 : 18,077.31 = 8,065.76 : x
2. Step 2: Convert to fraction form
   13,098.59/18,077.31 = 8,065.76/x
3. Step 3: Cross multiply
   13,098.59x = 18,077.31 × 8,065.76
4. Step 4: Simplify right side
   13,098.59x = 145,807,153.52
5. Step 5: Solve for x
   x = 145,807,153.52/13,098.59
6. Step 6: Final answer
   x = 11,131.52