Finding the Fourth Proportional to 21,927.72, 32,886.72 and 8,776.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,927.72 : 32,886.72 = 8,776.56 : x
2. Step 2: Convert to fraction form
   21,927.72/32,886.72 = 8,776.56/x
3. Step 3: Cross multiply
   21,927.72x = 32,886.72 × 8,776.56
4. Step 4: Simplify right side
   21,927.72x = 288,632,271.28
5. Step 5: Solve for x
   x = 288,632,271.28/21,927.72
6. Step 6: Final answer
   x = 13,162.89