Finding the Fourth Proportional to 21,413, 29,568.18 and 13,468.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,413 : 29,568.18 = 13,468.52 : x
2. Step 2: Convert to fraction form
   21,413/29,568.18 = 13,468.52/x
3. Step 3: Cross multiply
   21,413x = 29,568.18 × 13,468.52
4. Step 4: Simplify right side
   21,413x = 398,239,623.69
5. Step 5: Solve for x
   x = 398,239,623.69/21,413
6. Step 6: Final answer
   x = 18,598.03