Finding the Fourth Proportional to 9,909.78, 13,675.83 and 5,433.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,909.78 : 13,675.83 = 5,433.53 : x
2. Step 2: Convert to fraction form
   9,909.78/13,675.83 = 5,433.53/x
3. Step 3: Cross multiply
   9,909.78x = 13,675.83 × 5,433.53
4. Step 4: Simplify right side
   9,909.78x = 74,307,964.20
5. Step 5: Solve for x
   x = 74,307,964.20/9,909.78
6. Step 6: Final answer
   x = 7,498.45