Finding the Fourth Proportional to 13,810.83, 20,697.71 and 7,561.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,810.83 : 20,697.71 = 7,561.41 : x
2. Step 2: Convert to fraction form
   13,810.83/20,697.71 = 7,561.41/x
3. Step 3: Cross multiply
   13,810.83x = 20,697.71 × 7,561.41
4. Step 4: Simplify right side
   13,810.83x = 156,503,833.56
5. Step 5: Solve for x
   x = 156,503,833.56/13,810.83
6. Step 6: Final answer
   x = 11,331.96