Finding the Fourth Proportional to 7,056.98, 9,738.90 and 3,870.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,056.98 : 9,738.90 = 3,870.56 : x
2. Step 2: Convert to fraction form
   7,056.98/9,738.90 = 3,870.56/x
3. Step 3: Cross multiply
   7,056.98x = 9,738.90 × 3,870.56
4. Step 4: Simplify right side
   7,056.98x = 37,695,020.47
5. Step 5: Solve for x
   x = 37,695,020.47/7,056.98
6. Step 6: Final answer
   x = 5,341.53