Finding the Fourth Proportional to 9,836.66, 14,758.24 and 3,991.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,836.66 : 14,758.24 = 3,991.70 : x
2. Step 2: Convert to fraction form
   9,836.66/14,758.24 = 3,991.70/x
3. Step 3: Cross multiply
   9,836.66x = 14,758.24 × 3,991.70
4. Step 4: Simplify right side
   9,836.66x = 58,910,466.61
5. Step 5: Solve for x
   x = 58,910,466.61/9,836.66
6. Step 6: Final answer
   x = 5,988.87