Finding the Fourth Proportional to 19,012.05, 28,522.16 and 5,686.10

Step by Step Solution

1. Step 1: Write the proportion equation
   19,012.05 : 28,522.16 = 5,686.10 : x
2. Step 2: Convert to fraction form
   19,012.05/28,522.16 = 5,686.10/x
3. Step 3: Cross multiply
   19,012.05x = 28,522.16 × 5,686.10
4. Step 4: Simplify right side
   19,012.05x = 162,179,682.93
5. Step 5: Solve for x
   x = 162,179,682.93/19,012.05
6. Step 6: Final answer
   x = 8,530.36