Finding the Fourth Proportional to 10,347.39, 14,272.92 and 8,618.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,347.39 : 14,272.92 = 8,618.22 : x
2. Step 2: Convert to fraction form
   10,347.39/14,272.92 = 8,618.22/x
3. Step 3: Cross multiply
   10,347.39x = 14,272.92 × 8,618.22
4. Step 4: Simplify right side
   10,347.39x = 123,007,164.60
5. Step 5: Solve for x
   x = 123,007,164.60/10,347.39
6. Step 6: Final answer
   x = 11,887.75