Finding the Fourth Proportional to 12,827.72, 17,701.08 and 7,521.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,827.72 : 17,701.08 = 7,521.56 : x
2. Step 2: Convert to fraction form
   12,827.72/17,701.08 = 7,521.56/x
3. Step 3: Cross multiply
   12,827.72x = 17,701.08 × 7,521.56
4. Step 4: Simplify right side
   12,827.72x = 133,139,735.28
5. Step 5: Solve for x
   x = 133,139,735.28/12,827.72
6. Step 6: Final answer
   x = 10,379.06