Finding the Fourth Proportional to 10,718.01, 16,083.63 and 5,171.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,718.01 : 16,083.63 = 5,171.90 : x
2. Step 2: Convert to fraction form
   10,718.01/16,083.63 = 5,171.90/x
3. Step 3: Cross multiply
   10,718.01x = 16,083.63 × 5,171.90
4. Step 4: Simplify right side
   10,718.01x = 83,182,845.58
5. Step 5: Solve for x
   x = 83,182,845.58/10,718.01
6. Step 6: Final answer
   x = 7,761.03