Finding the Fourth Proportional to 17,215.93, 23,746.73 and 12,428.02

Step by Step Solution

1. Step 1: Write the proportion equation
   17,215.93 : 23,746.73 = 12,428.02 : x
2. Step 2: Convert to fraction form
   17,215.93/23,746.73 = 12,428.02/x
3. Step 3: Cross multiply
   17,215.93x = 23,746.73 × 12,428.02
4. Step 4: Simplify right side
   17,215.93x = 295,124,835.37
5. Step 5: Solve for x
   x = 295,124,835.37/17,215.93
6. Step 6: Final answer
   x = 17,142.54