Finding the Fourth Proportional to 10,300.72, 15,364.49 and 9,354.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,300.72 : 15,364.49 = 9,354.73 : x
2. Step 2: Convert to fraction form
   10,300.72/15,364.49 = 9,354.73/x
3. Step 3: Cross multiply
   10,300.72x = 15,364.49 × 9,354.73
4. Step 4: Simplify right side
   10,300.72x = 143,730,664.23
5. Step 5: Solve for x
   x = 143,730,664.23/10,300.72
6. Step 6: Final answer
   x = 13,953.45