Finding the Fourth Proportional to 14,105.32, 19,457.60 and 8,991.34

Step by Step Solution

1. Step 1: Write the proportion equation
   14,105.32 : 19,457.60 = 8,991.34 : x
2. Step 2: Convert to fraction form
   14,105.32/19,457.60 = 8,991.34/x
3. Step 3: Cross multiply
   14,105.32x = 19,457.60 × 8,991.34
4. Step 4: Simplify right side
   14,105.32x = 174,949,897.18
5. Step 5: Solve for x
   x = 174,949,897.18/14,105.32
6. Step 6: Final answer
   x = 12,403.11