Finding the Fourth Proportional to 10,133.73, 13,977.72 and 8,805.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,133.73 : 13,977.72 = 8,805.15 : x
2. Step 2: Convert to fraction form
   10,133.73/13,977.72 = 8,805.15/x
3. Step 3: Cross multiply
   10,133.73x = 13,977.72 × 8,805.15
4. Step 4: Simplify right side
   10,133.73x = 123,075,921.26
5. Step 5: Solve for x
   x = 123,075,921.26/10,133.73
6. Step 6: Final answer
   x = 12,145.17