Finding the Fourth Proportional to 5,101.48, 7,040.06 and 2,978.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,101.48 : 7,040.06 = 2,978.47 : x
2. Step 2: Convert to fraction form
   5,101.48/7,040.06 = 2,978.47/x
3. Step 3: Cross multiply
   5,101.48x = 7,040.06 × 2,978.47
4. Step 4: Simplify right side
   5,101.48x = 20,968,607.51
5. Step 5: Solve for x
   x = 20,968,607.51/5,101.48
6. Step 6: Final answer
   x = 4,110.30