Finding the Fourth Proportional to 12,708.86, 17,538.94 and 7,043.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,708.86 : 17,538.94 = 7,043.50 : x
2. Step 2: Convert to fraction form
   12,708.86/17,538.94 = 7,043.50/x
3. Step 3: Cross multiply
   12,708.86x = 17,538.94 × 7,043.50
4. Step 4: Simplify right side
   12,708.86x = 123,535,523.89
5. Step 5: Solve for x
   x = 123,535,523.89/12,708.86
6. Step 6: Final answer
   x = 9,720.43