Finding the Fourth Proportional to 23,490.32, 35,238.71 and 12,397.77

Step by Step Solution

1. Step 1: Write the proportion equation
   23,490.32 : 35,238.71 = 12,397.77 : x
2. Step 2: Convert to fraction form
   23,490.32/35,238.71 = 12,397.77/x
3. Step 3: Cross multiply
   23,490.32x = 35,238.71 × 12,397.77
4. Step 4: Simplify right side
   23,490.32x = 436,881,359.69
5. Step 5: Solve for x
   x = 436,881,359.69/23,490.32
6. Step 6: Final answer
   x = 18,598.36