Finding the Fourth Proportional to 12,993.32, 19,488.90 and 5,202.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.32 : 19,488.90 = 5,202.56 : x
2. Step 2: Convert to fraction form
   12,993.32/19,488.90 = 5,202.56/x
3. Step 3: Cross multiply
   12,993.32x = 19,488.90 × 5,202.56
4. Step 4: Simplify right side
   12,993.32x = 101,392,171.58
5. Step 5: Solve for x
   x = 101,392,171.58/12,993.32
6. Step 6: Final answer
   x = 7,803.41