Finding the Fourth Proportional to 11,645.48, 16,077.94 and 8,017.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,645.48 : 16,077.94 = 8,017.72 : x
2. Step 2: Convert to fraction form
   11,645.48/16,077.94 = 8,017.72/x
3. Step 3: Cross multiply
   11,645.48x = 16,077.94 × 8,017.72
4. Step 4: Simplify right side
   11,645.48x = 128,908,421.10
5. Step 5: Solve for x
   x = 128,908,421.10/11,645.48
6. Step 6: Final answer
   x = 11,069.40