Finding the Fourth Proportional to 9,910.69, 13,677.16 and 5,434.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,910.69 : 13,677.16 = 5,434.61 : x
2. Step 2: Convert to fraction form
   9,910.69/13,677.16 = 5,434.61/x
3. Step 3: Cross multiply
   9,910.69x = 13,677.16 × 5,434.61
4. Step 4: Simplify right side
   9,910.69x = 74,330,056.04
5. Step 5: Solve for x
   x = 74,330,056.04/9,910.69
6. Step 6: Final answer
   x = 7,499.99