Finding the Fourth Proportional to 10,388.39, 15,580.89 and 3,812.94

Step by Step Solution

1. Step 1: Write the proportion equation
   10,388.39 : 15,580.89 = 3,812.94 : x
2. Step 2: Convert to fraction form
   10,388.39/15,580.89 = 3,812.94/x
3. Step 3: Cross multiply
   10,388.39x = 15,580.89 × 3,812.94
4. Step 4: Simplify right side
   10,388.39x = 59,408,998.72
5. Step 5: Solve for x
   x = 59,408,998.72/10,388.39
6. Step 6: Final answer
   x = 5,718.79