Finding the Fourth Proportional to 14,578.71, 21,868.40 and 5,219.37

Step by Step Solution

1. Step 1: Write the proportion equation
   14,578.71 : 21,868.40 = 5,219.37 : x
2. Step 2: Convert to fraction form
   14,578.71/21,868.40 = 5,219.37/x
3. Step 3: Cross multiply
   14,578.71x = 21,868.40 × 5,219.37
4. Step 4: Simplify right side
   14,578.71x = 114,139,270.91
5. Step 5: Solve for x
   x = 114,139,270.91/14,578.71
6. Step 6: Final answer
   x = 7,829.17