Finding the Fourth Proportional to 9,912.10, 14,839.35 and 9,624.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,912.10 : 14,839.35 = 9,624.10 : x
2. Step 2: Convert to fraction form
   9,912.10/14,839.35 = 9,624.10/x
3. Step 3: Cross multiply
   9,912.10x = 14,839.35 × 9,624.10
4. Step 4: Simplify right side
   9,912.10x = 142,815,388.34
5. Step 5: Solve for x
   x = 142,815,388.34/9,912.10
6. Step 6: Final answer
   x = 14,408.19