Finding the Fourth Proportional to 9,258.55, 12,776.72 and 5,009.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,258.55 : 12,776.72 = 5,009.60 : x
2. Step 2: Convert to fraction form
   9,258.55/12,776.72 = 5,009.60/x
3. Step 3: Cross multiply
   9,258.55x = 12,776.72 × 5,009.60
4. Step 4: Simplify right side
   9,258.55x = 64,006,300.98
5. Step 5: Solve for x
   x = 64,006,300.98/9,258.55
6. Step 6: Final answer
   x = 6,913.21