Finding the Fourth Proportional to 13,086.83, 18,059.42 and 7,422.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,086.83 : 18,059.42 = 7,422.10 : x
2. Step 2: Convert to fraction form
   13,086.83/18,059.42 = 7,422.10/x
3. Step 3: Cross multiply
   13,086.83x = 18,059.42 × 7,422.10
4. Step 4: Simplify right side
   13,086.83x = 134,038,794.59
5. Step 5: Solve for x
   x = 134,038,794.59/13,086.83
6. Step 6: Final answer
   x = 10,242.26