Finding the Fourth Proportional to 23,015.61, 31,762.40 and 12,943.98

Step by Step Solution

1. Step 1: Write the proportion equation
   23,015.61 : 31,762.40 = 12,943.98 : x
2. Step 2: Convert to fraction form
   23,015.61/31,762.40 = 12,943.98/x
3. Step 3: Cross multiply
   23,015.61x = 31,762.40 × 12,943.98
4. Step 4: Simplify right side
   23,015.61x = 411,131,805.63
5. Step 5: Solve for x
   x = 411,131,805.63/23,015.61
6. Step 6: Final answer
   x = 17,863.17