Finding the Fourth Proportional to 13,993.53, 19,310.89 and 7,620.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,993.53 : 19,310.89 = 7,620.06 : x
2. Step 2: Convert to fraction form
   13,993.53/19,310.89 = 7,620.06/x
3. Step 3: Cross multiply
   13,993.53x = 19,310.89 × 7,620.06
4. Step 4: Simplify right side
   13,993.53x = 147,150,164.88
5. Step 5: Solve for x
   x = 147,150,164.88/13,993.53
6. Step 6: Final answer
   x = 10,515.58