Finding the Fourth Proportional to 20,746.76, 31,119.86 and 5,164.52

Step by Step Solution

1. Step 1: Write the proportion equation
   20,746.76 : 31,119.86 = 5,164.52 : x
2. Step 2: Convert to fraction form
   20,746.76/31,119.86 = 5,164.52/x
3. Step 3: Cross multiply
   20,746.76x = 31,119.86 × 5,164.52
4. Step 4: Simplify right side
   20,746.76x = 160,719,139.37
5. Step 5: Solve for x
   x = 160,719,139.37/20,746.76
6. Step 6: Final answer
   x = 7,746.71