Finding the Fourth Proportional to 19,012.42, 28,521.31 and 5,865.86

Step by Step Solution

1. Step 1: Write the proportion equation
   19,012.42 : 28,521.31 = 5,865.86 : x
2. Step 2: Convert to fraction form
   19,012.42/28,521.31 = 5,865.86/x
3. Step 3: Cross multiply
   19,012.42x = 28,521.31 × 5,865.86
4. Step 4: Simplify right side
   19,012.42x = 167,302,011.48
5. Step 5: Solve for x
   x = 167,302,011.48/19,012.42
6. Step 6: Final answer
   x = 8,799.62