Finding the Fourth Proportional to 12,333.61, 18,505.28 and 5,403.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,333.61 : 18,505.28 = 5,403.25 : x
2. Step 2: Convert to fraction form
   12,333.61/18,505.28 = 5,403.25/x
3. Step 3: Cross multiply
   12,333.61x = 18,505.28 × 5,403.25
4. Step 4: Simplify right side
   12,333.61x = 99,988,654.16
5. Step 5: Solve for x
   x = 99,988,654.16/12,333.61
6. Step 6: Final answer
   x = 8,107.01