Finding the Fourth Proportional to 9,256.06, 12,773.55 and 5,064.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,256.06 : 12,773.55 = 5,064.40 : x
2. Step 2: Convert to fraction form
   9,256.06/12,773.55 = 5,064.40/x
3. Step 3: Cross multiply
   9,256.06x = 12,773.55 × 5,064.40
4. Step 4: Simplify right side
   9,256.06x = 64,690,366.62
5. Step 5: Solve for x
   x = 64,690,366.62/9,256.06
6. Step 6: Final answer
   x = 6,988.97