Finding the Fourth Proportional to 12,801.30, 19,204.42 and 3,917.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.30 : 19,204.42 = 3,917.22 : x
2. Step 2: Convert to fraction form
   12,801.30/19,204.42 = 3,917.22/x
3. Step 3: Cross multiply
   12,801.30x = 19,204.42 × 3,917.22
4. Step 4: Simplify right side
   12,801.30x = 75,227,938.11
5. Step 5: Solve for x
   x = 75,227,938.11/12,801.30
6. Step 6: Final answer
   x = 5,876.59