Finding the Fourth Proportional to 9,072.10, 12,518.81 and 5,039.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,072.10 : 12,518.81 = 5,039.15 : x
2. Step 2: Convert to fraction form
   9,072.10/12,518.81 = 5,039.15/x
3. Step 3: Cross multiply
   9,072.10x = 12,518.81 × 5,039.15
4. Step 4: Simplify right side
   9,072.10x = 63,084,161.41
5. Step 5: Solve for x
   x = 63,084,161.41/9,072.10
6. Step 6: Final answer
   x = 6,953.65