Finding the Fourth Proportional to 13,997.49, 19,316.24 and 7,624.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,997.49 : 19,316.24 = 7,624.15 : x
2. Step 2: Convert to fraction form
   13,997.49/19,316.24 = 7,624.15/x
3. Step 3: Cross multiply
   13,997.49x = 19,316.24 × 7,624.15
4. Step 4: Simplify right side
   13,997.49x = 147,269,978.55
5. Step 5: Solve for x
   x = 147,269,978.55/13,997.49
6. Step 6: Final answer
   x = 10,521.17