Finding the Fourth Proportional to 13,969.31, 19,279.62 and 8,665.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,969.31 : 19,279.62 = 8,665.83 : x
2. Step 2: Convert to fraction form
   13,969.31/19,279.62 = 8,665.83/x
3. Step 3: Cross multiply
   13,969.31x = 19,279.62 × 8,665.83
4. Step 4: Simplify right side
   13,969.31x = 167,073,909.38
5. Step 5: Solve for x
   x = 167,073,909.38/13,969.31
6. Step 6: Final answer
   x = 11,960.07