Finding the Fourth Proportional to 10,111.48, 15,242.94 and 9,434.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,111.48 : 15,242.94 = 9,434.12 : x
2. Step 2: Convert to fraction form
   10,111.48/15,242.94 = 9,434.12/x
3. Step 3: Cross multiply
   10,111.48x = 15,242.94 × 9,434.12
4. Step 4: Simplify right side
   10,111.48x = 143,803,648.90
5. Step 5: Solve for x
   x = 143,803,648.90/10,111.48
6. Step 6: Final answer
   x = 14,221.82