Finding the Fourth Proportional to 11,017.27, 16,494.45 and 7,312.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,017.27 : 16,494.45 = 7,312.12 : x
2. Step 2: Convert to fraction form
   11,017.27/16,494.45 = 7,312.12/x
3. Step 3: Cross multiply
   11,017.27x = 16,494.45 × 7,312.12
4. Step 4: Simplify right side
   11,017.27x = 120,609,397.73
5. Step 5: Solve for x
   x = 120,609,397.73/11,017.27
6. Step 6: Final answer
   x = 10,947.30