Finding the Fourth Proportional to 12,404.58, 17,117.96 and 7,099.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.58 : 17,117.96 = 7,099.21 : x
2. Step 2: Convert to fraction form
   12,404.58/17,117.96 = 7,099.21/x
3. Step 3: Cross multiply
   12,404.58x = 17,117.96 × 7,099.21
4. Step 4: Simplify right side
   12,404.58x = 121,523,992.81
5. Step 5: Solve for x
   x = 121,523,992.81/12,404.58
6. Step 6: Final answer
   x = 9,796.70