Finding the Fourth Proportional to 5,208.72, 7,188.96 and 2,970.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,208.72 : 7,188.96 = 2,970.72 : x
2. Step 2: Convert to fraction form
   5,208.72/7,188.96 = 2,970.72/x
3. Step 3: Cross multiply
   5,208.72x = 7,188.96 × 2,970.72
4. Step 4: Simplify right side
   5,208.72x = 21,356,387.25
5. Step 5: Solve for x
   x = 21,356,387.25/5,208.72
6. Step 6: Final answer
   x = 4,100.12