Finding the Fourth Proportional to 4,802.60, 7,200.40 and 3,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,802.60 : 7,200.40 = 3,238.72 : x
2. Step 2: Convert to fraction form
   4,802.60/7,200.40 = 3,238.72/x
3. Step 3: Cross multiply
   4,802.60x = 7,200.40 × 3,238.72
4. Step 4: Simplify right side
   4,802.60x = 23,320,091.63
5. Step 5: Solve for x
   x = 23,320,091.63/4,802.60
6. Step 6: Final answer
   x = 4,855.72