Finding the Fourth Proportional to 7,342.50, 10,128.56 and 4,980.54

Step by Step Solution

1. Step 1: Write the proportion equation
   7,342.50 : 10,128.56 = 4,980.54 : x
2. Step 2: Convert to fraction form
   7,342.50/10,128.56 = 4,980.54/x
3. Step 3: Cross multiply
   7,342.50x = 10,128.56 × 4,980.54
4. Step 4: Simplify right side
   7,342.50x = 50,445,698.22
5. Step 5: Solve for x
   x = 50,445,698.22/7,342.50
6. Step 6: Final answer
   x = 6,870.37