Finding the Fourth Proportional to 21,838.82, 30,107.06 and 18,468.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,838.82 : 30,107.06 = 18,468.12 : x
2. Step 2: Convert to fraction form
   21,838.82/30,107.06 = 18,468.12/x
3. Step 3: Cross multiply
   21,838.82x = 30,107.06 × 18,468.12
4. Step 4: Simplify right side
   21,838.82x = 556,020,796.93
5. Step 5: Solve for x
   x = 556,020,796.93/21,838.82
6. Step 6: Final answer
   x = 25,460.20