Finding the Fourth Proportional to 21,560.83, 29,741.80 and 12,944.81

Step by Step Solution

1. Step 1: Write the proportion equation
   21,560.83 : 29,741.80 = 12,944.81 : x
2. Step 2: Convert to fraction form
   21,560.83/29,741.80 = 12,944.81/x
3. Step 3: Cross multiply
   21,560.83x = 29,741.80 × 12,944.81
4. Step 4: Simplify right side
   21,560.83x = 385,002,016.32
5. Step 5: Solve for x
   x = 385,002,016.32/21,560.83
6. Step 6: Final answer
   x = 17,856.55