Finding the Fourth Proportional to 9,264.54, 12,785.06 and 5,072.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,264.54 : 12,785.06 = 5,072.78 : x
2. Step 2: Convert to fraction form
   9,264.54/12,785.06 = 5,072.78/x
3. Step 3: Cross multiply
   9,264.54x = 12,785.06 × 5,072.78
4. Step 4: Simplify right side
   9,264.54x = 64,855,796.67
5. Step 5: Solve for x
   x = 64,855,796.67/9,264.54
6. Step 6: Final answer
   x = 7,000.43