Finding the Fourth Proportional to 9,400.05, 12,973.23 and 5,623.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,400.05 : 12,973.23 = 5,623.20 : x
2. Step 2: Convert to fraction form
   9,400.05/12,973.23 = 5,623.20/x
3. Step 3: Cross multiply
   9,400.05x = 12,973.23 × 5,623.20
4. Step 4: Simplify right side
   9,400.05x = 72,951,066.94
5. Step 5: Solve for x
   x = 72,951,066.94/9,400.05
6. Step 6: Final answer
   x = 7,760.71