Finding the Fourth Proportional to 21,111.02, 31,656.30 and 8,626.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,111.02 : 31,656.30 = 8,626.08 : x
2. Step 2: Convert to fraction form
   21,111.02/31,656.30 = 8,626.08/x
3. Step 3: Cross multiply
   21,111.02x = 31,656.30 × 8,626.08
4. Step 4: Simplify right side
   21,111.02x = 273,069,776.30
5. Step 5: Solve for x
   x = 273,069,776.30/21,111.02
6. Step 6: Final answer
   x = 12,934.94