Finding the Fourth Proportional to 10,869.48, 15,004.98 and 7,685.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,869.48 : 15,004.98 = 7,685.46 : x
2. Step 2: Convert to fraction form
   10,869.48/15,004.98 = 7,685.46/x
3. Step 3: Cross multiply
   10,869.48x = 15,004.98 × 7,685.46
4. Step 4: Simplify right side
   10,869.48x = 115,320,173.59
5. Step 5: Solve for x
   x = 115,320,173.59/10,869.48
6. Step 6: Final answer
   x = 10,609.54