Finding the Fourth Proportional to 13,003.89, 19,507.86 and 4,236.77

Step by Step Solution

1. Step 1: Write the proportion equation
   13,003.89 : 19,507.86 = 4,236.77 : x
2. Step 2: Convert to fraction form
   13,003.89/19,507.86 = 4,236.77/x
3. Step 3: Cross multiply
   13,003.89x = 19,507.86 × 4,236.77
4. Step 4: Simplify right side
   13,003.89x = 82,650,218.47
5. Step 5: Solve for x
   x = 82,650,218.47/13,003.89
6. Step 6: Final answer
   x = 6,355.81