Finding the Fourth Proportional to 11,666.63, 17,499.94 and 3,458.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,666.63 : 17,499.94 = 3,458.63 : x
2. Step 2: Convert to fraction form
   11,666.63/17,499.94 = 3,458.63/x
3. Step 3: Cross multiply
   11,666.63x = 17,499.94 × 3,458.63
4. Step 4: Simplify right side
   11,666.63x = 60,525,817.48
5. Step 5: Solve for x
   x = 60,525,817.48/11,666.63
6. Step 6: Final answer
   x = 5,187.94