Finding the Fourth Proportional to 10,199.99, 15,267.89 and 7,018.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,199.99 : 15,267.89 = 7,018.81 : x
2. Step 2: Convert to fraction form
   10,199.99/15,267.89 = 7,018.81/x
3. Step 3: Cross multiply
   10,199.99x = 15,267.89 × 7,018.81
4. Step 4: Simplify right side
   10,199.99x = 107,162,398.39
5. Step 5: Solve for x
   x = 107,162,398.39/10,199.99
6. Step 6: Final answer
   x = 10,506.13