Finding the Fourth Proportional to 9,940.19, 13,715.93 and 5,747.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,940.19 : 13,715.93 = 5,747.63 : x
2. Step 2: Convert to fraction form
   9,940.19/13,715.93 = 5,747.63/x
3. Step 3: Cross multiply
   9,940.19x = 13,715.93 × 5,747.63
4. Step 4: Simplify right side
   9,940.19x = 78,834,036.54
5. Step 5: Solve for x
   x = 78,834,036.54/9,940.19
6. Step 6: Final answer
   x = 7,930.84