Finding the Fourth Proportional to 10,538.63, 14,609.90 and 9,976.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,538.63 : 14,609.90 = 9,976.84 : x
2. Step 2: Convert to fraction form
   10,538.63/14,609.90 = 9,976.84/x
3. Step 3: Cross multiply
   10,538.63x = 14,609.90 × 9,976.84
4. Step 4: Simplify right side
   10,538.63x = 145,760,561.67
5. Step 5: Solve for x
   x = 145,760,561.67/10,538.63
6. Step 6: Final answer
   x = 13,831.07