Finding the Fourth Proportional to 3,680.70, 5,521.72 and 2,365.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.70 : 5,521.72 = 2,365.76 : x
2. Step 2: Convert to fraction form
   3,680.70/5,521.72 = 2,365.76/x
3. Step 3: Cross multiply
   3,680.70x = 5,521.72 × 2,365.76
4. Step 4: Simplify right side
   3,680.70x = 13,063,064.31
5. Step 5: Solve for x
   x = 13,063,064.31/3,680.70
6. Step 6: Final answer
   x = 3,549.07