Finding the Fourth Proportional to 9,894.57, 14,849.12 and 7,970.01

Step by Step Solution

1. Step 1: Write the proportion equation
   9,894.57 : 14,849.12 = 7,970.01 : x
2. Step 2: Convert to fraction form
   9,894.57/14,849.12 = 7,970.01/x
3. Step 3: Cross multiply
   9,894.57x = 14,849.12 × 7,970.01
4. Step 4: Simplify right side
   9,894.57x = 118,347,634.89
5. Step 5: Solve for x
   x = 118,347,634.89/9,894.57
6. Step 6: Final answer
   x = 11,960.87