Finding the Fourth Proportional to 12,389.72, 17,098.34 and 7,084.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,389.72 : 17,098.34 = 7,084.53 : x
2. Step 2: Convert to fraction form
   12,389.72/17,098.34 = 7,084.53/x
3. Step 3: Cross multiply
   12,389.72x = 17,098.34 × 7,084.53
4. Step 4: Simplify right side
   12,389.72x = 121,133,667.26
5. Step 5: Solve for x
   x = 121,133,667.26/12,389.72
6. Step 6: Final answer
   x = 9,776.95