Finding the Fourth Proportional to 13,151.61, 19,724.51 and 3,789.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,151.61 : 19,724.51 = 3,789.56 : x
2. Step 2: Convert to fraction form
   13,151.61/19,724.51 = 3,789.56/x
3. Step 3: Cross multiply
   13,151.61x = 19,724.51 × 3,789.56
4. Step 4: Simplify right side
   13,151.61x = 74,747,272.90
5. Step 5: Solve for x
   x = 74,747,272.90/13,151.61
6. Step 6: Final answer
   x = 5,683.51