Finding the Fourth Proportional to 13,030.47, 17,981.78 and 7,061.91

Step by Step Solution

1. Step 1: Write the proportion equation
   13,030.47 : 17,981.78 = 7,061.91 : x
2. Step 2: Convert to fraction form
   13,030.47/17,981.78 = 7,061.91/x
3. Step 3: Cross multiply
   13,030.47x = 17,981.78 × 7,061.91
4. Step 4: Simplify right side
   13,030.47x = 126,985,676.69
5. Step 5: Solve for x
   x = 126,985,676.69/13,030.47
6. Step 6: Final answer
   x = 9,745.29