Finding the Fourth Proportional to 18,100.71, 27,155.32 and 5,620.09

Step by Step Solution

1. Step 1: Write the proportion equation
   18,100.71 : 27,155.32 = 5,620.09 : x
2. Step 2: Convert to fraction form
   18,100.71/27,155.32 = 5,620.09/x
3. Step 3: Cross multiply
   18,100.71x = 27,155.32 × 5,620.09
4. Step 4: Simplify right side
   18,100.71x = 152,615,314.28
5. Step 5: Solve for x
   x = 152,615,314.28/18,100.71
6. Step 6: Final answer
   x = 8,431.45