Finding the Fourth Proportional to 12,858.32, 19,287.96 and 3,624.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,858.32 : 19,287.96 = 3,624.56 : x
2. Step 2: Convert to fraction form
   12,858.32/19,287.96 = 3,624.56/x
3. Step 3: Cross multiply
   12,858.32x = 19,287.96 × 3,624.56
4. Step 4: Simplify right side
   12,858.32x = 69,910,368.30
5. Step 5: Solve for x
   x = 69,910,368.30/12,858.32
6. Step 6: Final answer
   x = 5,436.98