Finding the Fourth Proportional to 13,026.56, 19,546.86 and 8,646.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,026.56 : 19,546.86 = 8,646.08 : x
2. Step 2: Convert to fraction form
   13,026.56/19,546.86 = 8,646.08/x
3. Step 3: Cross multiply
   13,026.56x = 19,546.86 × 8,646.08
4. Step 4: Simplify right side
   13,026.56x = 169,003,715.31
5. Step 5: Solve for x
   x = 169,003,715.31/13,026.56
6. Step 6: Final answer
   x = 12,973.78