Finding the Fourth Proportional to 13,003.30, 19,472.55 and 10,411.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.30 : 19,472.55 = 10,411.30 : x
2. Step 2: Convert to fraction form
   13,003.30/19,472.55 = 10,411.30/x
3. Step 3: Cross multiply
   13,003.30x = 19,472.55 × 10,411.30
4. Step 4: Simplify right side
   13,003.30x = 202,734,559.82
5. Step 5: Solve for x
   x = 202,734,559.82/13,003.30
6. Step 6: Final answer
   x = 15,591.01