Finding the Fourth Proportional to 8,963.59, 12,366.43 and 5,425.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,963.59 : 12,366.43 = 5,425.51 : x
2. Step 2: Convert to fraction form
   8,963.59/12,366.43 = 5,425.51/x
3. Step 3: Cross multiply
   8,963.59x = 12,366.43 × 5,425.51
4. Step 4: Simplify right side
   8,963.59x = 67,094,189.63
5. Step 5: Solve for x
   x = 67,094,189.63/8,963.59
6. Step 6: Final answer
   x = 7,485.19