Finding the Fourth Proportional to 21,722.32, 29,973 and 13,341.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,722.32 : 29,973 = 13,341.52 : x
2. Step 2: Convert to fraction form
   21,722.32/29,973 = 13,341.52/x
3. Step 3: Cross multiply
   21,722.32x = 29,973 × 13,341.52
4. Step 4: Simplify right side
   21,722.32x = 399,885,378.96
5. Step 5: Solve for x
   x = 399,885,378.96/21,722.32
6. Step 6: Final answer
   x = 18,408.96