Finding the Fourth Proportional to 10,290.56, 15,345.47 and 10,197

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.56 : 15,345.47 = 10,197 : x
2. Step 2: Convert to fraction form
   10,290.56/15,345.47 = 10,197/x
3. Step 3: Cross multiply
   10,290.56x = 15,345.47 × 10,197
4. Step 4: Simplify right side
   10,290.56x = 156,477,757.59
5. Step 5: Solve for x
   x = 156,477,757.59/10,290.56
6. Step 6: Final answer
   x = 15,205.95