Finding the Fourth Proportional to 12,554.49, 18,831.72 and 4,763.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,554.49 : 18,831.72 = 4,763.31 : x
2. Step 2: Convert to fraction form
   12,554.49/18,831.72 = 4,763.31/x
3. Step 3: Cross multiply
   12,554.49x = 18,831.72 × 4,763.31
4. Step 4: Simplify right side
   12,554.49x = 89,701,320.19
5. Step 5: Solve for x
   x = 89,701,320.19/12,554.49
6. Step 6: Final answer
   x = 7,144.96