Finding the Fourth Proportional to 9,970.42, 13,760.15 and 7,448.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,970.42 : 13,760.15 = 7,448.15 : x
2. Step 2: Convert to fraction form
   9,970.42/13,760.15 = 7,448.15/x
3. Step 3: Cross multiply
   9,970.42x = 13,760.15 × 7,448.15
4. Step 4: Simplify right side
   9,970.42x = 102,487,606.78
5. Step 5: Solve for x
   x = 102,487,606.78/9,970.42
6. Step 6: Final answer
   x = 10,279.17