Finding the Fourth Proportional to 23,475.84, 35,235.68 and 12,390.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,475.84 : 35,235.68 = 12,390.72 : x
2. Step 2: Convert to fraction form
   23,475.84/35,235.68 = 12,390.72/x
3. Step 3: Cross multiply
   23,475.84x = 35,235.68 × 12,390.72
4. Step 4: Simplify right side
   23,475.84x = 436,595,444.89
5. Step 5: Solve for x
   x = 436,595,444.89/23,475.84
6. Step 6: Final answer
   x = 18,597.65