Finding the Fourth Proportional to 10,203.04, 15,290.72 and 9,178.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,203.04 : 15,290.72 = 9,178.91 : x
2. Step 2: Convert to fraction form
   10,203.04/15,290.72 = 9,178.91/x
3. Step 3: Cross multiply
   10,203.04x = 15,290.72 × 9,178.91
4. Step 4: Simplify right side
   10,203.04x = 140,352,142.72
5. Step 5: Solve for x
   x = 140,352,142.72/10,203.04
6. Step 6: Final answer
   x = 13,755.91