Finding the Fourth Proportional to 9,417.07, 12,996.12 and 5,385.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,417.07 : 12,996.12 = 5,385.16 : x
2. Step 2: Convert to fraction form
   9,417.07/12,996.12 = 5,385.16/x
3. Step 3: Cross multiply
   9,417.07x = 12,996.12 × 5,385.16
4. Step 4: Simplify right side
   9,417.07x = 69,986,185.58
5. Step 5: Solve for x
   x = 69,986,185.58/9,417.07
6. Step 6: Final answer
   x = 7,431.84