Finding the Fourth Proportional to 11,128.72, 16,696.60 and 4,894.00

Step by Step Solution

1. Step 1: Write the proportion equation
   11,128.72 : 16,696.60 = 4,894.00 : x
2. Step 2: Convert to fraction form
   11,128.72/16,696.60 = 4,894.00/x
3. Step 3: Cross multiply
   11,128.72x = 16,696.60 × 4,894.00
4. Step 4: Simplify right side
   11,128.72x = 81,713,076.92
5. Step 5: Solve for x
   x = 81,713,076.92/11,128.72
6. Step 6: Final answer
   x = 7,342.54