Finding the Fourth Proportional to 13,070.50, 18,025.06 and 10,081.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,070.50 : 18,025.06 = 10,081.60 : x
2. Step 2: Convert to fraction form
   13,070.50/18,025.06 = 10,081.60/x
3. Step 3: Cross multiply
   13,070.50x = 18,025.06 × 10,081.60
4. Step 4: Simplify right side
   13,070.50x = 181,721,444.90
5. Step 5: Solve for x
   x = 181,721,444.90/13,070.50
6. Step 6: Final answer
   x = 13,903.17