Finding the Fourth Proportional to 12,461.21, 17,196.35 and 7,157.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,461.21 : 17,196.35 = 7,157.69 : x
2. Step 2: Convert to fraction form
   12,461.21/17,196.35 = 7,157.69/x
3. Step 3: Cross multiply
   12,461.21x = 17,196.35 × 7,157.69
4. Step 4: Simplify right side
   12,461.21x = 123,086,106.64
5. Step 5: Solve for x
   x = 123,086,106.64/12,461.21
6. Step 6: Final answer
   x = 9,877.54