Finding the Fourth Proportional to 16,781.50, 23,152.80 and 9,705.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,781.50 : 23,152.80 = 9,705.34 : x
2. Step 2: Convert to fraction form
   16,781.50/23,152.80 = 9,705.34/x
3. Step 3: Cross multiply
   16,781.50x = 23,152.80 × 9,705.34
4. Step 4: Simplify right side
   16,781.50x = 224,705,795.95
5. Step 5: Solve for x
   x = 224,705,795.95/16,781.50
6. Step 6: Final answer
   x = 13,390.09