Finding the Fourth Proportional to 9,973.20, 13,760.59 and 5,665.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,973.20 : 13,760.59 = 5,665.33 : x
2. Step 2: Convert to fraction form
   9,973.20/13,760.59 = 5,665.33/x
3. Step 3: Cross multiply
   9,973.20x = 13,760.59 × 5,665.33
4. Step 4: Simplify right side
   9,973.20x = 77,958,186.22
5. Step 5: Solve for x
   x = 77,958,186.22/9,973.20
6. Step 6: Final answer
   x = 7,816.77