Finding the Fourth Proportional to 5,128.60, 7,707.34 and 3,048.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,128.60 : 7,707.34 = 3,048.98 : x
2. Step 2: Convert to fraction form
   5,128.60/7,707.34 = 3,048.98/x
3. Step 3: Cross multiply
   5,128.60x = 7,707.34 × 3,048.98
4. Step 4: Simplify right side
   5,128.60x = 23,499,525.51
5. Step 5: Solve for x
   x = 23,499,525.51/5,128.60
6. Step 6: Final answer
   x = 4,582.05