Finding the Fourth Proportional to 9,951.59, 14,937.21 and 7,311.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,951.59 : 14,937.21 = 7,311.70 : x
2. Step 2: Convert to fraction form
   9,951.59/14,937.21 = 7,311.70/x
3. Step 3: Cross multiply
   9,951.59x = 14,937.21 × 7,311.70
4. Step 4: Simplify right side
   9,951.59x = 109,216,417.03
5. Step 5: Solve for x
   x = 109,216,417.03/9,951.59
6. Step 6: Final answer
   x = 10,974.77