Finding the Fourth Proportional to 9,612.64, 13,267.86 and 5,423.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,612.64 : 13,267.86 = 5,423.32 : x
2. Step 2: Convert to fraction form
   9,612.64/13,267.86 = 5,423.32/x
3. Step 3: Cross multiply
   9,612.64x = 13,267.86 × 5,423.32
4. Step 4: Simplify right side
   9,612.64x = 71,955,850.50
5. Step 5: Solve for x
   x = 71,955,850.50/9,612.64
6. Step 6: Final answer
   x = 7,485.55