Finding the Fourth Proportional to 10,812.74, 16,211.91 and 3,886.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,812.74 : 16,211.91 = 3,886.34 : x
2. Step 2: Convert to fraction form
   10,812.74/16,211.91 = 3,886.34/x
3. Step 3: Cross multiply
   10,812.74x = 16,211.91 × 3,886.34
4. Step 4: Simplify right side
   10,812.74x = 63,004,994.31
5. Step 5: Solve for x
   x = 63,004,994.31/10,812.74
6. Step 6: Final answer
   x = 5,826.92