Finding the Fourth Proportional to 5,388.72, 8,081.16 and 2,100.92

Step by Step Solution

1. Step 1: Write the proportion equation
   5,388.72 : 8,081.16 = 2,100.92 : x
2. Step 2: Convert to fraction form
   5,388.72/8,081.16 = 2,100.92/x
3. Step 3: Cross multiply
   5,388.72x = 8,081.16 × 2,100.92
4. Step 4: Simplify right side
   5,388.72x = 16,977,870.67
5. Step 5: Solve for x
   x = 16,977,870.67/5,388.72
6. Step 6: Final answer
   x = 3,150.63