Finding the Fourth Proportional to 9,149.94, 12,620.55 and 7,258.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,149.94 : 12,620.55 = 7,258.87 : x
2. Step 2: Convert to fraction form
   9,149.94/12,620.55 = 7,258.87/x
3. Step 3: Cross multiply
   9,149.94x = 12,620.55 × 7,258.87
4. Step 4: Simplify right side
   9,149.94x = 91,610,931.78
5. Step 5: Solve for x
   x = 91,610,931.78/9,149.94
6. Step 6: Final answer
   x = 10,012.19