Finding the Fourth Proportional to 11,661.03, 17,485.61 and 4,263.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,661.03 : 17,485.61 = 4,263.57 : x
2. Step 2: Convert to fraction form
   11,661.03/17,485.61 = 4,263.57/x
3. Step 3: Cross multiply
   11,661.03x = 17,485.61 × 4,263.57
4. Step 4: Simplify right side
   11,661.03x = 74,551,100.91
5. Step 5: Solve for x
   x = 74,551,100.91/11,661.03
6. Step 6: Final answer
   x = 6,393.18