Finding the Fourth Proportional to 11,644.10, 17,459.55 and 7,950.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,644.10 : 17,459.55 = 7,950.81 : x
2. Step 2: Convert to fraction form
   11,644.10/17,459.55 = 7,950.81/x
3. Step 3: Cross multiply
   11,644.10x = 17,459.55 × 7,950.81
4. Step 4: Simplify right side
   11,644.10x = 138,817,532.00
5. Step 5: Solve for x
   x = 138,817,532.00/11,644.10
6. Step 6: Final answer
   x = 11,921.70