Finding the Fourth Proportional to 20,111.77, 30,167.75 and 8,272.00

Step by Step Solution

1. Step 1: Write the proportion equation
   20,111.77 : 30,167.75 = 8,272.00 : x
2. Step 2: Convert to fraction form
   20,111.77/30,167.75 = 8,272.00/x
3. Step 3: Cross multiply
   20,111.77x = 30,167.75 × 8,272.00
4. Step 4: Simplify right side
   20,111.77x = 249,547,477.16
5. Step 5: Solve for x
   x = 249,547,477.16/20,111.77
6. Step 6: Final answer
   x = 12,408.03