Finding the Fourth Proportional to 22,530.48, 31,091.73 and 12,458.70

Step by Step Solution

1. Step 1: Write the proportion equation
   22,530.48 : 31,091.73 = 12,458.70 : x
2. Step 2: Convert to fraction form
   22,530.48/31,091.73 = 12,458.70/x
3. Step 3: Cross multiply
   22,530.48x = 31,091.73 × 12,458.70
4. Step 4: Simplify right side
   22,530.48x = 387,362,381.09
5. Step 5: Solve for x
   x = 387,362,381.09/22,530.48
6. Step 6: Final answer
   x = 17,192.82