Finding the Fourth Proportional to 23,148.84, 31,945.42 and 12,538.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,148.84 : 31,945.42 = 12,538.50 : x
2. Step 2: Convert to fraction form
   23,148.84/31,945.42 = 12,538.50/x
3. Step 3: Cross multiply
   23,148.84x = 31,945.42 × 12,538.50
4. Step 4: Simplify right side
   23,148.84x = 400,547,648.67
5. Step 5: Solve for x
   x = 400,547,648.67/23,148.84
6. Step 6: Final answer
   x = 17,303.14