Finding the Fourth Proportional to 22,845.72, 31,513.95 and 13,412.46

Step by Step Solution

1. Step 1: Write the proportion equation
   22,845.72 : 31,513.95 = 13,412.46 : x
2. Step 2: Convert to fraction form
   22,845.72/31,513.95 = 13,412.46/x
3. Step 3: Cross multiply
   22,845.72x = 31,513.95 × 13,412.46
4. Step 4: Simplify right side
   22,845.72x = 422,679,593.82
5. Step 5: Solve for x
   x = 422,679,593.82/22,845.72
6. Step 6: Final answer
   x = 18,501.48