Finding the Fourth Proportional to 9,909.78, 13,674.96 and 5,433.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,909.78 : 13,674.96 = 5,433.30 : x
2. Step 2: Convert to fraction form
   9,909.78/13,674.96 = 5,433.30/x
3. Step 3: Cross multiply
   9,909.78x = 13,674.96 × 5,433.30
4. Step 4: Simplify right side
   9,909.78x = 74,300,160.17
5. Step 5: Solve for x
   x = 74,300,160.17/9,909.78
6. Step 6: Final answer
   x = 7,497.66