Finding the Fourth Proportional to 13,030.12, 17,981.48 and 7,061.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,030.12 : 17,981.48 = 7,061.78 : x
2. Step 2: Convert to fraction form
   13,030.12/17,981.48 = 7,061.78/x
3. Step 3: Cross multiply
   13,030.12x = 17,981.48 × 7,061.78
4. Step 4: Simplify right side
   13,030.12x = 126,981,255.83
5. Step 5: Solve for x
   x = 126,981,255.83/13,030.12
6. Step 6: Final answer
   x = 9,745.21