Finding the Fourth Proportional to 10,216.19, 15,333.60 and 5,289.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,216.19 : 15,333.60 = 5,289.37 : x
2. Step 2: Convert to fraction form
   10,216.19/15,333.60 = 5,289.37/x
3. Step 3: Cross multiply
   10,216.19x = 15,333.60 × 5,289.37
4. Step 4: Simplify right side
   10,216.19x = 81,105,065.33
5. Step 5: Solve for x
   x = 81,105,065.33/10,216.19
6. Step 6: Final answer
   x = 7,938.87