Finding the Fourth Proportional to 10,077.04, 15,104.46 and 8,611.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,077.04 : 15,104.46 = 8,611.72 : x
2. Step 2: Convert to fraction form
   10,077.04/15,104.46 = 8,611.72/x
3. Step 3: Cross multiply
   10,077.04x = 15,104.46 × 8,611.72
4. Step 4: Simplify right side
   10,077.04x = 130,075,380.27
5. Step 5: Solve for x
   x = 130,075,380.27/10,077.04
6. Step 6: Final answer
   x = 12,908.09