Finding the Fourth Proportional to 13,061.42, 18,025.02 and 7,955.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.42 : 18,025.02 = 7,955.18 : x
2. Step 2: Convert to fraction form
   13,061.42/18,025.02 = 7,955.18/x
3. Step 3: Cross multiply
   13,061.42x = 18,025.02 × 7,955.18
4. Step 4: Simplify right side
   13,061.42x = 143,392,188.48
5. Step 5: Solve for x
   x = 143,392,188.48/13,061.42
6. Step 6: Final answer
   x = 10,978.30