Finding the Fourth Proportional to 21,443.22, 29,591.94 and 12,368.40

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.22 : 29,591.94 = 12,368.40 : x
2. Step 2: Convert to fraction form
   21,443.22/29,591.94 = 12,368.40/x
3. Step 3: Cross multiply
   21,443.22x = 29,591.94 × 12,368.40
4. Step 4: Simplify right side
   21,443.22x = 366,004,950.70
5. Step 5: Solve for x
   x = 366,004,950.70/21,443.22
6. Step 6: Final answer
   x = 17,068.56