Finding the Fourth Proportional to 3,803.76, 5,258.04 and 3,648.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,803.76 : 5,258.04 = 3,648.72 : x
2. Step 2: Convert to fraction form
   3,803.76/5,258.04 = 3,648.72/x
3. Step 3: Cross multiply
   3,803.76x = 5,258.04 × 3,648.72
4. Step 4: Simplify right side
   3,803.76x = 19,185,115.71
5. Step 5: Solve for x
   x = 19,185,115.71/3,803.76
6. Step 6: Final answer
   x = 5,043.72