Finding the Fourth Proportional to 9,909.55, 13,676.04 and 5,434.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,909.55 : 13,676.04 = 5,434.16 : x
2. Step 2: Convert to fraction form
   9,909.55/13,676.04 = 5,434.16/x
3. Step 3: Cross multiply
   9,909.55x = 13,676.04 × 5,434.16
4. Step 4: Simplify right side
   9,909.55x = 74,317,789.53
5. Step 5: Solve for x
   x = 74,317,789.53/9,909.55
6. Step 6: Final answer
   x = 7,499.61