Finding the Fourth Proportional to 3,832.31, 5,288.59 and 2,153.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,832.31 : 5,288.59 = 2,153.72 : x
2. Step 2: Convert to fraction form
   3,832.31/5,288.59 = 2,153.72/x
3. Step 3: Cross multiply
   3,832.31x = 5,288.59 × 2,153.72
4. Step 4: Simplify right side
   3,832.31x = 11,390,142.05
5. Step 5: Solve for x
   x = 11,390,142.05/3,832.31
6. Step 6: Final answer
   x = 2,972.13