Finding the Fourth Proportional to 10,561.39, 14,558.13 and 7,018.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,561.39 : 14,558.13 = 7,018.45 : x
2. Step 2: Convert to fraction form
   10,561.39/14,558.13 = 7,018.45/x
3. Step 3: Cross multiply
   10,561.39x = 14,558.13 × 7,018.45
4. Step 4: Simplify right side
   10,561.39x = 102,175,471.10
5. Step 5: Solve for x
   x = 102,175,471.10/10,561.39
6. Step 6: Final answer
   x = 9,674.44