Finding the Fourth Proportional to 10,897.12, 16,342.42 and 3,970

Step by Step Solution

1. Step 1: Write the proportion equation
   10,897.12 : 16,342.42 = 3,970 : x
2. Step 2: Convert to fraction form
   10,897.12/16,342.42 = 3,970/x
3. Step 3: Cross multiply
   10,897.12x = 16,342.42 × 3,970
4. Step 4: Simplify right side
   10,897.12x = 64,879,407.40
5. Step 5: Solve for x
   x = 64,879,407.40/10,897.12
6. Step 6: Final answer
   x = 5,953.81