Finding the Fourth Proportional to 11,710.53, 16,165.33 and 7,938.86

Step by Step Solution

1. Step 1: Write the proportion equation
   11,710.53 : 16,165.33 = 7,938.86 : x
2. Step 2: Convert to fraction form
   11,710.53/16,165.33 = 7,938.86/x
3. Step 3: Cross multiply
   11,710.53x = 16,165.33 × 7,938.86
4. Step 4: Simplify right side
   11,710.53x = 128,334,291.72
5. Step 5: Solve for x
   x = 128,334,291.72/11,710.53
6. Step 6: Final answer
   x = 10,958.88