Finding the Fourth Proportional to 11,722.47, 16,171.42 and 7,244.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,722.47 : 16,171.42 = 7,244.61 : x
2. Step 2: Convert to fraction form
   11,722.47/16,171.42 = 7,244.61/x
3. Step 3: Cross multiply
   11,722.47x = 16,171.42 × 7,244.61
4. Step 4: Simplify right side
   11,722.47x = 117,155,594.82
5. Step 5: Solve for x
   x = 117,155,594.82/11,722.47
6. Step 6: Final answer
   x = 9,994.10