Finding the Fourth Proportional to 7,100.72, 9,798.80 and 3,956.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,100.72 : 9,798.80 = 3,956.84 : x
2. Step 2: Convert to fraction form
   7,100.72/9,798.80 = 3,956.84/x
3. Step 3: Cross multiply
   7,100.72x = 9,798.80 × 3,956.84
4. Step 4: Simplify right side
   7,100.72x = 38,772,283.79
5. Step 5: Solve for x
   x = 38,772,283.79/7,100.72
6. Step 6: Final answer
   x = 5,460.33