Finding the Fourth Proportional to 10,072.08, 15,103.86 and 5,391.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,072.08 : 15,103.86 = 5,391.09 : x
2. Step 2: Convert to fraction form
   10,072.08/15,103.86 = 5,391.09/x
3. Step 3: Cross multiply
   10,072.08x = 15,103.86 × 5,391.09
4. Step 4: Simplify right side
   10,072.08x = 81,426,268.61
5. Step 5: Solve for x
   x = 81,426,268.61/10,072.08
6. Step 6: Final answer
   x = 8,084.35