Finding the Fourth Proportional to 11,653.78, 16,085.73 and 7,929.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,653.78 : 16,085.73 = 7,929.94 : x
2. Step 2: Convert to fraction form
   11,653.78/16,085.73 = 7,929.94/x
3. Step 3: Cross multiply
   11,653.78x = 16,085.73 × 7,929.94
4. Step 4: Simplify right side
   11,653.78x = 127,558,873.76
5. Step 5: Solve for x
   x = 127,558,873.76/11,653.78
6. Step 6: Final answer
   x = 10,945.71