Finding the Fourth Proportional to 9,264.11, 12,784.61 and 5,287.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,264.11 : 12,784.61 = 5,287.41 : x
2. Step 2: Convert to fraction form
   9,264.11/12,784.61 = 5,287.41/x
3. Step 3: Cross multiply
   9,264.11x = 12,784.61 × 5,287.41
4. Step 4: Simplify right side
   9,264.11x = 67,597,487.98
5. Step 5: Solve for x
   x = 67,597,487.98/9,264.11
6. Step 6: Final answer
   x = 7,296.71