Finding the Fourth Proportional to 13,080.42, 19,626.12 and 8,402.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,080.42 : 19,626.12 = 8,402.94 : x
2. Step 2: Convert to fraction form
   13,080.42/19,626.12 = 8,402.94/x
3. Step 3: Cross multiply
   13,080.42x = 19,626.12 × 8,402.94
4. Step 4: Simplify right side
   13,080.42x = 164,917,108.79
5. Step 5: Solve for x
   x = 164,917,108.79/13,080.42
6. Step 6: Final answer
   x = 12,607.94