Finding the Fourth Proportional to 8,537.22, 12,813.82 and 5,256.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,537.22 : 12,813.82 = 5,256.72 : x
2. Step 2: Convert to fraction form
   8,537.22/12,813.82 = 5,256.72/x
3. Step 3: Cross multiply
   8,537.22x = 12,813.82 × 5,256.72
4. Step 4: Simplify right side
   8,537.22x = 67,358,663.87
5. Step 5: Solve for x
   x = 67,358,663.87/8,537.22
6. Step 6: Final answer
   x = 7,890.00