Finding the Fourth Proportional to 3,933.15, 5,427.72 and 2,164.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,933.15 : 5,427.72 = 2,164.76 : x
2. Step 2: Convert to fraction form
   3,933.15/5,427.72 = 2,164.76/x
3. Step 3: Cross multiply
   3,933.15x = 5,427.72 × 2,164.76
4. Step 4: Simplify right side
   3,933.15x = 11,749,684.01
5. Step 5: Solve for x
   x = 11,749,684.01/3,933.15
6. Step 6: Final answer
   x = 2,987.35