Finding the Fourth Proportional to 13,119.57, 19,679.76 and 3,760.43

Step by Step Solution

1. Step 1: Write the proportion equation
   13,119.57 : 19,679.76 = 3,760.43 : x
2. Step 2: Convert to fraction form
   13,119.57/19,679.76 = 3,760.43/x
3. Step 3: Cross multiply
   13,119.57x = 19,679.76 × 3,760.43
4. Step 4: Simplify right side
   13,119.57x = 74,004,261.50
5. Step 5: Solve for x
   x = 74,004,261.50/13,119.57
6. Step 6: Final answer
   x = 5,640.75