Finding the Fourth Proportional to 13,060.42, 19,553.37 and 8,669.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,060.42 : 19,553.37 = 8,669.14 : x
2. Step 2: Convert to fraction form
   13,060.42/19,553.37 = 8,669.14/x
3. Step 3: Cross multiply
   13,060.42x = 19,553.37 × 8,669.14
4. Step 4: Simplify right side
   13,060.42x = 169,510,902.00
5. Step 5: Solve for x
   x = 169,510,902.00/13,060.42
6. Step 6: Final answer
   x = 12,978.98