Finding the Fourth Proportional to 9,401.30, 12,972.89 and 5,623.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.30 : 12,972.89 = 5,623.70 : x
2. Step 2: Convert to fraction form
   9,401.30/12,972.89 = 5,623.70/x
3. Step 3: Cross multiply
   9,401.30x = 12,972.89 × 5,623.70
4. Step 4: Simplify right side
   9,401.30x = 72,955,641.49
5. Step 5: Solve for x
   x = 72,955,641.49/9,401.30
6. Step 6: Final answer
   x = 7,760.17