Finding the Fourth Proportional to 9,910.69, 14,864.67 and 5,476.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,910.69 : 14,864.67 = 5,476.55 : x
2. Step 2: Convert to fraction form
   9,910.69/14,864.67 = 5,476.55/x
3. Step 3: Cross multiply
   9,910.69x = 14,864.67 × 5,476.55
4. Step 4: Simplify right side
   9,910.69x = 81,407,108.49
5. Step 5: Solve for x
   x = 81,407,108.49/9,910.69
6. Step 6: Final answer
   x = 8,214.07