Finding the Fourth Proportional to 10,472.56, 15,707.56 and 3,897

Step by Step Solution

1. Step 1: Write the proportion equation
   10,472.56 : 15,707.56 = 3,897 : x
2. Step 2: Convert to fraction form
   10,472.56/15,707.56 = 3,897/x
3. Step 3: Cross multiply
   10,472.56x = 15,707.56 × 3,897
4. Step 4: Simplify right side
   10,472.56x = 61,212,361.32
5. Step 5: Solve for x
   x = 61,212,361.32/10,472.56
6. Step 6: Final answer
   x = 5,845.02