Finding the Fourth Proportional to 39,921.66, 55,089.86 and 22,914.09

Step by Step Solution

1. Step 1: Write the proportion equation
   39,921.66 : 55,089.86 = 22,914.09 : x
2. Step 2: Convert to fraction form
   39,921.66/55,089.86 = 22,914.09/x
3. Step 3: Cross multiply
   39,921.66x = 55,089.86 × 22,914.09
4. Step 4: Simplify right side
   39,921.66x = 1,262,333,895.56
5. Step 5: Solve for x
   x = 1,262,333,895.56/39,921.66
6. Step 6: Final answer
   x = 31,620.28