Finding the Fourth Proportional to 11,131.03, 15,353.71 and 7,772.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,131.03 : 15,353.71 = 7,772.59 : x
2. Step 2: Convert to fraction form
   11,131.03/15,353.71 = 7,772.59/x
3. Step 3: Cross multiply
   11,131.03x = 15,353.71 × 7,772.59
4. Step 4: Simplify right side
   11,131.03x = 119,338,092.81
5. Step 5: Solve for x
   x = 119,338,092.81/11,131.03
6. Step 6: Final answer
   x = 10,721.21