Finding the Fourth Proportional to 17,377.58, 23,980.86 and 9,419.87

Step by Step Solution

1. Step 1: Write the proportion equation
   17,377.58 : 23,980.86 = 9,419.87 : x
2. Step 2: Convert to fraction form
   17,377.58/23,980.86 = 9,419.87/x
3. Step 3: Cross multiply
   17,377.58x = 23,980.86 × 9,419.87
4. Step 4: Simplify right side
   17,377.58x = 225,896,463.78
5. Step 5: Solve for x
   x = 225,896,463.78/17,377.58
6. Step 6: Final answer
   x = 12,999.31