Finding the Fourth Proportional to 9,849.70, 14,748.13 and 7,865.91

Step by Step Solution

1. Step 1: Write the proportion equation
   9,849.70 : 14,748.13 = 7,865.91 : x
2. Step 2: Convert to fraction form
   9,849.70/14,748.13 = 7,865.91/x
3. Step 3: Cross multiply
   9,849.70x = 14,748.13 × 7,865.91
4. Step 4: Simplify right side
   9,849.70x = 116,007,428.83
5. Step 5: Solve for x
   x = 116,007,428.83/9,849.70
6. Step 6: Final answer
   x = 11,777.76