Finding the Fourth Proportional to 13,997.39, 19,316.61 and 7,624.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,997.39 : 19,316.61 = 7,624.28 : x
2. Step 2: Convert to fraction form
   13,997.39/19,316.61 = 7,624.28/x
3. Step 3: Cross multiply
   13,997.39x = 19,316.61 × 7,624.28
4. Step 4: Simplify right side
   13,997.39x = 147,275,291.58
5. Step 5: Solve for x
   x = 147,275,291.58/13,997.39
6. Step 6: Final answer
   x = 10,521.62