Finding the Fourth Proportional to 9,910.55, 13,676.61 and 5,434.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,910.55 : 13,676.61 = 5,434.37 : x
2. Step 2: Convert to fraction form
   9,910.55/13,676.61 = 5,434.37/x
3. Step 3: Cross multiply
   9,910.55x = 13,676.61 × 5,434.37
4. Step 4: Simplify right side
   9,910.55x = 74,323,759.09
5. Step 5: Solve for x
   x = 74,323,759.09/9,910.55
6. Step 6: Final answer
   x = 7,499.46