Finding the Fourth Proportional to 13,113.37, 19,673.70 and 5,718.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,113.37 : 19,673.70 = 5,718.48 : x
2. Step 2: Convert to fraction form
   13,113.37/19,673.70 = 5,718.48/x
3. Step 3: Cross multiply
   13,113.37x = 19,673.70 × 5,718.48
4. Step 4: Simplify right side
   13,113.37x = 112,503,561.61
5. Step 5: Solve for x
   x = 112,503,561.61/13,113.37
6. Step 6: Final answer
   x = 8,579.31