Finding the Fourth Proportional to 22,975.31, 31,705.32 and 12,904.85

Step by Step Solution

1. Step 1: Write the proportion equation
   22,975.31 : 31,705.32 = 12,904.85 : x
2. Step 2: Convert to fraction form
   22,975.31/31,705.32 = 12,904.85/x
3. Step 3: Cross multiply
   22,975.31x = 31,705.32 × 12,904.85
4. Step 4: Simplify right side
   22,975.31x = 409,152,526.46
5. Step 5: Solve for x
   x = 409,152,526.46/22,975.31
6. Step 6: Final answer
   x = 17,808.36