Finding the Fourth Proportional to 7,870.74, 10,854.60 and 5,597.62

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.74 : 10,854.60 = 5,597.62 : x
2. Step 2: Convert to fraction form
   7,870.74/10,854.60 = 5,597.62/x
3. Step 3: Cross multiply
   7,870.74x = 10,854.60 × 5,597.62
4. Step 4: Simplify right side
   7,870.74x = 60,759,926.05
5. Step 5: Solve for x
   x = 60,759,926.05/7,870.74
6. Step 6: Final answer
   x = 7,719.72