Finding the Fourth Proportional to 9,264.26, 12,784.55 and 5,072.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,264.26 : 12,784.55 = 5,072.51 : x
2. Step 2: Convert to fraction form
   9,264.26/12,784.55 = 5,072.51/x
3. Step 3: Cross multiply
   9,264.26x = 12,784.55 × 5,072.51
4. Step 4: Simplify right side
   9,264.26x = 64,849,668.44
5. Step 5: Solve for x
   x = 64,849,668.44/9,264.26
6. Step 6: Final answer
   x = 6,999.99