Finding the Fourth Proportional to 55,215.10, 82,820.69 and 17,777.71

Step by Step Solution

1. Step 1: Write the proportion equation
   55,215.10 : 82,820.69 = 17,777.71 : x
2. Step 2: Convert to fraction form
   55,215.10/82,820.69 = 17,777.71/x
3. Step 3: Cross multiply
   55,215.10x = 82,820.69 × 17,777.71
4. Step 4: Simplify right side
   55,215.10x = 1,472,362,208.82
5. Step 5: Solve for x
   x = 1,472,362,208.82/55,215.10
6. Step 6: Final answer
   x = 26,665.93