Finding the Fourth Proportional to 9,721.69, 13,416.54 and 5,529.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,721.69 : 13,416.54 = 5,529.94 : x
2. Step 2: Convert to fraction form
   9,721.69/13,416.54 = 5,529.94/x
3. Step 3: Cross multiply
   9,721.69x = 13,416.54 × 5,529.94
4. Step 4: Simplify right side
   9,721.69x = 74,192,606.93
5. Step 5: Solve for x
   x = 74,192,606.93/9,721.69
6. Step 6: Final answer
   x = 7,631.66