Finding the Fourth Proportional to 10,965.93, 15,123.42 and 7,772.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,965.93 : 15,123.42 = 7,772.91 : x
2. Step 2: Convert to fraction form
   10,965.93/15,123.42 = 7,772.91/x
3. Step 3: Cross multiply
   10,965.93x = 15,123.42 × 7,772.91
4. Step 4: Simplify right side
   10,965.93x = 117,552,982.55
5. Step 5: Solve for x
   x = 117,552,982.55/10,965.93
6. Step 6: Final answer
   x = 10,719.84