Finding the Fourth Proportional to 13,050.30, 19,561.05 and 7,211.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,050.30 : 19,561.05 = 7,211.10 : x
2. Step 2: Convert to fraction form
   13,050.30/19,561.05 = 7,211.10/x
3. Step 3: Cross multiply
   13,050.30x = 19,561.05 × 7,211.10
4. Step 4: Simplify right side
   13,050.30x = 141,056,687.66
5. Step 5: Solve for x
   x = 141,056,687.66/13,050.30
6. Step 6: Final answer
   x = 10,808.69