Finding the Fourth Proportional to 10,215.52, 15,298.61 and 5,819.65

Step by Step Solution

1. Step 1: Write the proportion equation
   10,215.52 : 15,298.61 = 5,819.65 : x
2. Step 2: Convert to fraction form
   10,215.52/15,298.61 = 5,819.65/x
3. Step 3: Cross multiply
   10,215.52x = 15,298.61 × 5,819.65
4. Step 4: Simplify right side
   10,215.52x = 89,032,488.34
5. Step 5: Solve for x
   x = 89,032,488.34/10,215.52
6. Step 6: Final answer
   x = 8,715.42