Finding the Fourth Proportional to 10,363.92, 15,445.89 and 10,347.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,363.92 : 15,445.89 = 10,347.45 : x
2. Step 2: Convert to fraction form
   10,363.92/15,445.89 = 10,347.45/x
3. Step 3: Cross multiply
   10,363.92x = 15,445.89 × 10,347.45
4. Step 4: Simplify right side
   10,363.92x = 159,825,574.48
5. Step 5: Solve for x
   x = 159,825,574.48/10,363.92
6. Step 6: Final answer
   x = 15,421.34