Finding the Fourth Proportional to 12,548.78, 17,316.04 and 7,245.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,548.78 : 17,316.04 = 7,245.30 : x
2. Step 2: Convert to fraction form
   12,548.78/17,316.04 = 7,245.30/x
3. Step 3: Cross multiply
   12,548.78x = 17,316.04 × 7,245.30
4. Step 4: Simplify right side
   12,548.78x = 125,459,904.61
5. Step 5: Solve for x
   x = 125,459,904.61/12,548.78
6. Step 6: Final answer
   x = 9,997.78