Finding the Fourth Proportional to 43,573.82, 65,372.06 and 12,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43,573.82 : 65,372.06 = 12,411.50 : x
2. Step 2: Convert to fraction form
   43,573.82/65,372.06 = 12,411.50/x
3. Step 3: Cross multiply
   43,573.82x = 65,372.06 × 12,411.50
4. Step 4: Simplify right side
   43,573.82x = 811,365,026.86
5. Step 5: Solve for x
   x = 811,365,026.86/43,573.82
6. Step 6: Final answer
   x = 18,620.47