Finding the Fourth Proportional to 10,131.78, 15,192.79 and 4,790.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.78 : 15,192.79 = 4,790.52 : x
2. Step 2: Convert to fraction form
   10,131.78/15,192.79 = 4,790.52/x
3. Step 3: Cross multiply
   10,131.78x = 15,192.79 × 4,790.52
4. Step 4: Simplify right side
   10,131.78x = 72,781,364.35
5. Step 5: Solve for x
   x = 72,781,364.35/10,131.78
6. Step 6: Final answer
   x = 7,183.47