Finding the Fourth Proportional to 21,423.82, 29,561.35 and 13,460.41

Step by Step Solution

1. Step 1: Write the proportion equation
   21,423.82 : 29,561.35 = 13,460.41 : x
2. Step 2: Convert to fraction form
   21,423.82/29,561.35 = 13,460.41/x
3. Step 3: Cross multiply
   21,423.82x = 29,561.35 × 13,460.41
4. Step 4: Simplify right side
   21,423.82x = 397,907,743.35
5. Step 5: Solve for x
   x = 397,907,743.35/21,423.82
6. Step 6: Final answer
   x = 18,573.15