Finding the Fourth Proportional to 21,327.59, 29,422.52 and 12,369.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,327.59 : 29,422.52 = 12,369.88 : x
2. Step 2: Convert to fraction form
   21,327.59/29,422.52 = 12,369.88/x
3. Step 3: Cross multiply
   21,327.59x = 29,422.52 × 12,369.88
4. Step 4: Simplify right side
   21,327.59x = 363,953,041.70
5. Step 5: Solve for x
   x = 363,953,041.70/21,327.59
6. Step 6: Final answer
   x = 17,064.89