Finding the Fourth Proportional to 11,392.72, 17,085.56 and 4,818.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,392.72 : 17,085.56 = 4,818.80 : x
2. Step 2: Convert to fraction form
   11,392.72/17,085.56 = 4,818.80/x
3. Step 3: Cross multiply
   11,392.72x = 17,085.56 × 4,818.80
4. Step 4: Simplify right side
   11,392.72x = 82,331,896.53
5. Step 5: Solve for x
   x = 82,331,896.53/11,392.72
6. Step 6: Final answer
   x = 7,226.71