Finding the Fourth Proportional to 13,099.59, 19,649.59 and 7,293.11

Step by Step Solution

1. Step 1: Write the proportion equation
   13,099.59 : 19,649.59 = 7,293.11 : x
2. Step 2: Convert to fraction form
   13,099.59/19,649.59 = 7,293.11/x
3. Step 3: Cross multiply
   13,099.59x = 19,649.59 × 7,293.11
4. Step 4: Simplify right side
   13,099.59x = 143,306,621.32
5. Step 5: Solve for x
   x = 143,306,621.32/13,099.59
6. Step 6: Final answer
   x = 10,939.78