Finding the Fourth Proportional to 12,921,379.14, 17,831,504.79 and 7,492,020.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,921,379.14 : 17,831,504.79 = 7,492,020.42 : x
2. Step 2: Convert to fraction form
   12,921,379.14/17,831,504.79 = 7,492,020.42/x
3. Step 3: Cross multiply
   12,921,379.14x = 17,831,504.79 × 7,492,020.42
4. Step 4: Simplify right side
   12,921,379.14x = 133,593,998,006,007.80
5. Step 5: Solve for x
   x = 133,593,998,006,007.80/12,921,379.14
6. Step 6: Final answer
   x = 10,338,989.09