Finding the Fourth Proportional to 10,051.50, 13,856.70 and 7,217.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,051.50 : 13,856.70 = 7,217.96 : x
2. Step 2: Convert to fraction form
   10,051.50/13,856.70 = 7,217.96/x
3. Step 3: Cross multiply
   10,051.50x = 13,856.70 × 7,217.96
4. Step 4: Simplify right side
   10,051.50x = 100,017,106.33
5. Step 5: Solve for x
   x = 100,017,106.33/10,051.50
6. Step 6: Final answer
   x = 9,950.47