Finding the Fourth Proportional to 9,018.06, 12,445.14 and 5,661

Step by Step Solution

1. Step 1: Write the proportion equation
   9,018.06 : 12,445.14 = 5,661 : x
2. Step 2: Convert to fraction form
   9,018.06/12,445.14 = 5,661/x
3. Step 3: Cross multiply
   9,018.06x = 12,445.14 × 5,661
4. Step 4: Simplify right side
   9,018.06x = 70,451,937.54
5. Step 5: Solve for x
   x = 70,451,937.54/9,018.06
6. Step 6: Final answer
   x = 7,812.32