Finding the Fourth Proportional to 11,665.98, 17,505.65 and 4,269.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,665.98 : 17,505.65 = 4,269.46 : x
2. Step 2: Convert to fraction form
   11,665.98/17,505.65 = 4,269.46/x
3. Step 3: Cross multiply
   11,665.98x = 17,505.65 × 4,269.46
4. Step 4: Simplify right side
   11,665.98x = 74,739,672.45
5. Step 5: Solve for x
   x = 74,739,672.45/11,665.98
6. Step 6: Final answer
   x = 6,406.63