Finding the Fourth Proportional to 11,499.63, 17,165.52 and 9,866.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,499.63 : 17,165.52 = 9,866.67 : x
2. Step 2: Convert to fraction form
   11,499.63/17,165.52 = 9,866.67/x
3. Step 3: Cross multiply
   11,499.63x = 17,165.52 × 9,866.67
4. Step 4: Simplify right side
   11,499.63x = 169,366,521.22
5. Step 5: Solve for x
   x = 169,366,521.22/11,499.63
6. Step 6: Final answer
   x = 14,728.00