Finding the Fourth Proportional to 13,098.89, 18,071.12 and 8,061.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,098.89 : 18,071.12 = 8,061.59 : x
2. Step 2: Convert to fraction form
   13,098.89/18,071.12 = 8,061.59/x
3. Step 3: Cross multiply
   13,098.89x = 18,071.12 × 8,061.59
4. Step 4: Simplify right side
   13,098.89x = 145,681,869.93
5. Step 5: Solve for x
   x = 145,681,869.93/13,098.89
6. Step 6: Final answer
   x = 11,121.70