Finding the Fourth Proportional to 21,293.33, 29,389.86 and 12,345.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,293.33 : 29,389.86 = 12,345.75 : x
2. Step 2: Convert to fraction form
   21,293.33/29,389.86 = 12,345.75/x
3. Step 3: Cross multiply
   21,293.33x = 29,389.86 × 12,345.75
4. Step 4: Simplify right side
   21,293.33x = 362,839,864.10
5. Step 5: Solve for x
   x = 362,839,864.10/21,293.33
6. Step 6: Final answer
   x = 17,040.08