Finding the Fourth Proportional to 12,908.42, 19,354.82 and 5,791.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,908.42 : 19,354.82 = 5,791.35 : x
2. Step 2: Convert to fraction form
   12,908.42/19,354.82 = 5,791.35/x
3. Step 3: Cross multiply
   12,908.42x = 19,354.82 × 5,791.35
4. Step 4: Simplify right side
   12,908.42x = 112,090,507.85
5. Step 5: Solve for x
   x = 112,090,507.85/12,908.42
6. Step 6: Final answer
   x = 8,683.52