Finding the Fourth Proportional to 10,986.12, 16,462.44 and 7,038.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,986.12 : 16,462.44 = 7,038.45 : x
2. Step 2: Convert to fraction form
   10,986.12/16,462.44 = 7,038.45/x
3. Step 3: Cross multiply
   10,986.12x = 16,462.44 × 7,038.45
4. Step 4: Simplify right side
   10,986.12x = 115,870,060.82
5. Step 5: Solve for x
   x = 115,870,060.82/10,986.12
6. Step 6: Final answer
   x = 10,546.95