Finding the Fourth Proportional to 7,100.64, 10,650.72 and 1,906.40

Step by Step Solution

1. Step 1: Write the proportion equation
   7,100.64 : 10,650.72 = 1,906.40 : x
2. Step 2: Convert to fraction form
   7,100.64/10,650.72 = 1,906.40/x
3. Step 3: Cross multiply
   7,100.64x = 10,650.72 × 1,906.40
4. Step 4: Simplify right side
   7,100.64x = 20,304,532.61
5. Step 5: Solve for x
   x = 20,304,532.61/7,100.64
6. Step 6: Final answer
   x = 2,859.54