Finding the Fourth Proportional to 9,018.72, 13,510.12 and 7,061.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,018.72 : 13,510.12 = 7,061.76 : x
2. Step 2: Convert to fraction form
   9,018.72/13,510.12 = 7,061.76/x
3. Step 3: Cross multiply
   9,018.72x = 13,510.12 × 7,061.76
4. Step 4: Simplify right side
   9,018.72x = 95,405,225.01
5. Step 5: Solve for x
   x = 95,405,225.01/9,018.72
6. Step 6: Final answer
   x = 10,578.58