Finding the Fourth Proportional to 11,392.16, 17,085.47 and 4,814.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,392.16 : 17,085.47 = 4,814.78 : x
2. Step 2: Convert to fraction form
   11,392.16/17,085.47 = 4,814.78/x
3. Step 3: Cross multiply
   11,392.16x = 17,085.47 × 4,814.78
4. Step 4: Simplify right side
   11,392.16x = 82,262,669.75
5. Step 5: Solve for x
   x = 82,262,669.75/11,392.16
6. Step 6: Final answer
   x = 7,220.99