Finding the Fourth Proportional to 10,986.47, 16,485.86 and 4,417.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,986.47 : 16,485.86 = 4,417.26 : x
2. Step 2: Convert to fraction form
   10,986.47/16,485.86 = 4,417.26/x
3. Step 3: Cross multiply
   10,986.47x = 16,485.86 × 4,417.26
4. Step 4: Simplify right side
   10,986.47x = 72,822,307.86
5. Step 5: Solve for x
   x = 72,822,307.86/10,986.47
6. Step 6: Final answer
   x = 6,628.37