Finding the Fourth Proportional to 11,719.47, 16,167.28 and 7,241.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,719.47 : 16,167.28 = 7,241.61 : x
2. Step 2: Convert to fraction form
   11,719.47/16,167.28 = 7,241.61/x
3. Step 3: Cross multiply
   11,719.47x = 16,167.28 × 7,241.61
4. Step 4: Simplify right side
   11,719.47x = 117,077,100.31
5. Step 5: Solve for x
   x = 117,077,100.31/11,719.47
6. Step 6: Final answer
   x = 9,989.97