Finding the Fourth Proportional to 7,139.60, 10,710.04 and 1,945.52

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139.60 : 10,710.04 = 1,945.52 : x
2. Step 2: Convert to fraction form
   7,139.60/10,710.04 = 1,945.52/x
3. Step 3: Cross multiply
   7,139.60x = 10,710.04 × 1,945.52
4. Step 4: Simplify right side
   7,139.60x = 20,836,597.02
5. Step 5: Solve for x
   x = 20,836,597.02/7,139.60
6. Step 6: Final answer
   x = 2,918.45