Finding the Fourth Proportional to 54,912, 82,368.72 and 17,976

Step by Step Solution

1. Step 1: Write the proportion equation
   54,912 : 82,368.72 = 17,976 : x
2. Step 2: Convert to fraction form
   54,912/82,368.72 = 17,976/x
3. Step 3: Cross multiply
   54,912x = 82,368.72 × 17,976
4. Step 4: Simplify right side
   54,912x = 1,480,660,110.72
5. Step 5: Solve for x
   x = 1,480,660,110.72/54,912
6. Step 6: Final answer
   x = 26,964.24