Finding the Fourth Proportional to 39,791.83, 54,911.56 and 21,886.83

Step by Step Solution

1. Step 1: Write the proportion equation
   39,791.83 : 54,911.56 = 21,886.83 : x
2. Step 2: Convert to fraction form
   39,791.83/54,911.56 = 21,886.83/x
3. Step 3: Cross multiply
   39,791.83x = 54,911.56 × 21,886.83
4. Step 4: Simplify right side
   39,791.83x = 1,201,839,774.46
5. Step 5: Solve for x
   x = 1,201,839,774.46/39,791.83
6. Step 6: Final answer
   x = 30,203.18