Finding the Fourth Proportional to 7,392.88, 10,203.78 and 4,870.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,392.88 : 10,203.78 = 4,870.72 : x
2. Step 2: Convert to fraction form
   7,392.88/10,203.78 = 4,870.72/x
3. Step 3: Cross multiply
   7,392.88x = 10,203.78 × 4,870.72
4. Step 4: Simplify right side
   7,392.88x = 49,699,755.32
5. Step 5: Solve for x
   x = 49,699,755.32/7,392.88
6. Step 6: Final answer
   x = 6,722.65