Finding the Fourth Proportional to 10,101.12, 13,945 and 7,085.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,101.12 : 13,945 = 7,085.48 : x
2. Step 2: Convert to fraction form
   10,101.12/13,945 = 7,085.48/x
3. Step 3: Cross multiply
   10,101.12x = 13,945 × 7,085.48
4. Step 4: Simplify right side
   10,101.12x = 98,807,018.60
5. Step 5: Solve for x
   x = 98,807,018.60/10,101.12
6. Step 6: Final answer
   x = 9,781.79