Finding the Fourth Proportional to 13,710.17, 18,919.95 and 7,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,710.17 : 18,919.95 = 7,422.50 : x
2. Step 2: Convert to fraction form
   13,710.17/18,919.95 = 7,422.50/x
3. Step 3: Cross multiply
   13,710.17x = 18,919.95 × 7,422.50
4. Step 4: Simplify right side
   13,710.17x = 140,433,328.88
5. Step 5: Solve for x
   x = 140,433,328.88/13,710.17
6. Step 6: Final answer
   x = 10,243.00