Finding the Fourth Proportional to 23,131,084.92, 31,921,087.32 and 12,817,980.24

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131,084.92 : 31,921,087.32 = 12,817,980.24 : x
2. Step 2: Convert to fraction form
   23,131,084.92/31,921,087.32 = 12,817,980.24/x
3. Step 3: Cross multiply
   23,131,084.92x = 31,921,087.32 × 12,817,980.24
4. Step 4: Simplify right side
   23,131,084.92x = 409,163,866,507,074.56
5. Step 5: Solve for x
   x = 409,163,866,507,074.56/23,131,084.92
6. Step 6: Final answer
   x = 17,688,918.09