Finding the Fourth Proportional to 11,720.16, 16,174.08 and 7,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,720.16 : 16,174.08 = 7,002.72 : x
2. Step 2: Convert to fraction form
   11,720.16/16,174.08 = 7,002.72/x
3. Step 3: Cross multiply
   11,720.16x = 16,174.08 × 7,002.72
4. Step 4: Simplify right side
   11,720.16x = 113,262,553.50
5. Step 5: Solve for x
   x = 113,262,553.50/11,720.16
6. Step 6: Final answer
   x = 9,663.91