Finding the Fourth Proportional to 9,997.50, 15,005.48 and 5,070.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,997.50 : 15,005.48 = 5,070.60 : x
2. Step 2: Convert to fraction form
   9,997.50/15,005.48 = 5,070.60/x
3. Step 3: Cross multiply
   9,997.50x = 15,005.48 × 5,070.60
4. Step 4: Simplify right side
   9,997.50x = 76,086,855.84
5. Step 5: Solve for x
   x = 76,086,855.84/9,997.50
6. Step 6: Final answer
   x = 7,610.59