Finding the Fourth Proportional to 11,436.03, 15,772.80 and 7,657.98

Step by Step Solution

1. Step 1: Write the proportion equation
   11,436.03 : 15,772.80 = 7,657.98 : x
2. Step 2: Convert to fraction form
   11,436.03/15,772.80 = 7,657.98/x
3. Step 3: Cross multiply
   11,436.03x = 15,772.80 × 7,657.98
4. Step 4: Simplify right side
   11,436.03x = 120,787,786.94
5. Step 5: Solve for x
   x = 120,787,786.94/11,436.03
6. Step 6: Final answer
   x = 10,562.04