Finding the Fourth Proportional to 13,098.96, 18,076.59 and 7,130.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,098.96 : 18,076.59 = 7,130.61 : x
2. Step 2: Convert to fraction form
   13,098.96/18,076.59 = 7,130.61/x
3. Step 3: Cross multiply
   13,098.96x = 18,076.59 × 7,130.61
4. Step 4: Simplify right side
   13,098.96x = 128,897,113.42
5. Step 5: Solve for x
   x = 128,897,113.42/13,098.96
6. Step 6: Final answer
   x = 9,840.26