Finding the Fourth Proportional to 41,128.90, 61,722.15 and 17,772.10

Step by Step Solution

1. Step 1: Write the proportion equation
   41,128.90 : 61,722.15 = 17,772.10 : x
2. Step 2: Convert to fraction form
   41,128.90/61,722.15 = 17,772.10/x
3. Step 3: Cross multiply
   41,128.90x = 61,722.15 × 17,772.10
4. Step 4: Simplify right side
   41,128.90x = 1,096,932,222.02
5. Step 5: Solve for x
   x = 1,096,932,222.02/41,128.90
6. Step 6: Final answer
   x = 26,670.59