Finding the Fourth Proportional to 5,100.86, 7,040.72 and 2,976.98

Step by Step Solution

1. Step 1: Write the proportion equation
   5,100.86 : 7,040.72 = 2,976.98 : x
2. Step 2: Convert to fraction form
   5,100.86/7,040.72 = 2,976.98/x
3. Step 3: Cross multiply
   5,100.86x = 7,040.72 × 2,976.98
4. Step 4: Simplify right side
   5,100.86x = 20,960,054.86
5. Step 5: Solve for x
   x = 20,960,054.86/5,100.86
6. Step 6: Final answer
   x = 4,109.12