Finding the Fourth Proportional to 22,948, 31,663.36 and 13,513.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,948 : 31,663.36 = 13,513.12 : x
2. Step 2: Convert to fraction form
   22,948/31,663.36 = 13,513.12/x
3. Step 3: Cross multiply
   22,948x = 31,663.36 × 13,513.12
4. Step 4: Simplify right side
   22,948x = 427,870,783.28
5. Step 5: Solve for x
   x = 427,870,783.28/22,948
6. Step 6: Final answer
   x = 18,645.23