Finding the Fourth Proportional to 9,018.74, 12,449.54 and 7,754.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,018.74 : 12,449.54 = 7,754.72 : x
2. Step 2: Convert to fraction form
   9,018.74/12,449.54 = 7,754.72/x
3. Step 3: Cross multiply
   9,018.74x = 12,449.54 × 7,754.72
4. Step 4: Simplify right side
   9,018.74x = 96,542,595.81
5. Step 5: Solve for x
   x = 96,542,595.81/9,018.74
6. Step 6: Final answer
   x = 10,704.67