Finding the Fourth Proportional to 9,300.13, 13,969.07 and 8,214.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,300.13 : 13,969.07 = 8,214.15 : x
2. Step 2: Convert to fraction form
   9,300.13/13,969.07 = 8,214.15/x
3. Step 3: Cross multiply
   9,300.13x = 13,969.07 × 8,214.15
4. Step 4: Simplify right side
   9,300.13x = 114,744,056.88
5. Step 5: Solve for x
   x = 114,744,056.88/9,300.13
6. Step 6: Final answer
   x = 12,337.90