Finding the Fourth Proportional to 13,997.67, 19,316.78 and 7,710.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,997.67 : 19,316.78 = 7,710.04 : x
2. Step 2: Convert to fraction form
   13,997.67/19,316.78 = 7,710.04/x
3. Step 3: Cross multiply
   13,997.67x = 19,316.78 × 7,710.04
4. Step 4: Simplify right side
   13,997.67x = 148,933,146.47
5. Step 5: Solve for x
   x = 148,933,146.47/13,997.67
6. Step 6: Final answer
   x = 10,639.85