Finding the Fourth Proportional to 9,264.32, 12,784.82 and 5,072.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,264.32 : 12,784.82 = 5,072.96 : x
2. Step 2: Convert to fraction form
   9,264.32/12,784.82 = 5,072.96/x
3. Step 3: Cross multiply
   9,264.32x = 12,784.82 × 5,072.96
4. Step 4: Simplify right side
   9,264.32x = 64,856,880.47
5. Step 5: Solve for x
   x = 64,856,880.47/9,264.32
6. Step 6: Final answer
   x = 7,000.72