Finding the Fourth Proportional to 13,966.56, 20,938.86 and 5,196.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,966.56 : 20,938.86 = 5,196.69 : x
2. Step 2: Convert to fraction form
   13,966.56/20,938.86 = 5,196.69/x
3. Step 3: Cross multiply
   13,966.56x = 20,938.86 × 5,196.69
4. Step 4: Simplify right side
   13,966.56x = 108,812,764.37
5. Step 5: Solve for x
   x = 108,812,764.37/13,966.56
6. Step 6: Final answer
   x = 7,790.95