Finding the Fourth Proportional to 9,012.06, 13,506.57 and 3,810.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,012.06 : 13,506.57 = 3,810.78 : x
2. Step 2: Convert to fraction form
   9,012.06/13,506.57 = 3,810.78/x
3. Step 3: Cross multiply
   9,012.06x = 13,506.57 × 3,810.78
4. Step 4: Simplify right side
   9,012.06x = 51,470,566.82
5. Step 5: Solve for x
   x = 51,470,566.82/9,012.06
6. Step 6: Final answer
   x = 5,711.30