Finding the Fourth Proportional to 12,893.89, 19,341.01 and 4,128.81

Step by Step Solution

1. Step 1: Write the proportion equation
   12,893.89 : 19,341.01 = 4,128.81 : x
2. Step 2: Convert to fraction form
   12,893.89/19,341.01 = 4,128.81/x
3. Step 3: Cross multiply
   12,893.89x = 19,341.01 × 4,128.81
4. Step 4: Simplify right side
   12,893.89x = 79,855,238.15
5. Step 5: Solve for x
   x = 79,855,238.15/12,893.89
6. Step 6: Final answer
   x = 6,193.26