Finding the Fourth Proportional to 19,521.20, 29,271.78 and 7,038.09

Step by Step Solution

1. Step 1: Write the proportion equation
   19,521.20 : 29,271.78 = 7,038.09 : x
2. Step 2: Convert to fraction form
   19,521.20/29,271.78 = 7,038.09/x
3. Step 3: Cross multiply
   19,521.20x = 29,271.78 × 7,038.09
4. Step 4: Simplify right side
   19,521.20x = 206,017,422.10
5. Step 5: Solve for x
   x = 206,017,422.10/19,521.20
6. Step 6: Final answer
   x = 10,553.52