Finding the Fourth Proportional to 9,399.02, 12,970.04 and 5,207

Step by Step Solution

1. Step 1: Write the proportion equation
   9,399.02 : 12,970.04 = 5,207 : x
2. Step 2: Convert to fraction form
   9,399.02/12,970.04 = 5,207/x
3. Step 3: Cross multiply
   9,399.02x = 12,970.04 × 5,207
4. Step 4: Simplify right side
   9,399.02x = 67,534,998.28
5. Step 5: Solve for x
   x = 67,534,998.28/9,399.02
6. Step 6: Final answer
   x = 7,185.32