Finding the Fourth Proportional to 12,493.60, 17,244.48 and 7,189.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,493.60 : 17,244.48 = 7,189.04 : x
2. Step 2: Convert to fraction form
   12,493.60/17,244.48 = 7,189.04/x
3. Step 3: Cross multiply
   12,493.60x = 17,244.48 × 7,189.04
4. Step 4: Simplify right side
   12,493.60x = 123,971,256.50
5. Step 5: Solve for x
   x = 123,971,256.50/12,493.60
6. Step 6: Final answer
   x = 9,922.78