Finding the Fourth Proportional to 10,345.91, 15,488.94 and 9,277.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,345.91 : 15,488.94 = 9,277.62 : x
2. Step 2: Convert to fraction form
   10,345.91/15,488.94 = 9,277.62/x
3. Step 3: Cross multiply
   10,345.91x = 15,488.94 × 9,277.62
4. Step 4: Simplify right side
   10,345.91x = 143,700,375.69
5. Step 5: Solve for x
   x = 143,700,375.69/10,345.91
6. Step 6: Final answer
   x = 13,889.59