Finding the Fourth Proportional to 5,139.06, 7,707.78 and 1,675.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.06 : 7,707.78 = 1,675.50 : x
2. Step 2: Convert to fraction form
   5,139.06/7,707.78 = 1,675.50/x
3. Step 3: Cross multiply
   5,139.06x = 7,707.78 × 1,675.50
4. Step 4: Simplify right side
   5,139.06x = 12,914,385.39
5. Step 5: Solve for x
   x = 12,914,385.39/5,139.06
6. Step 6: Final answer
   x = 2,512.99