Finding the Fourth Proportional to 23,538.84, 32,484.16 and 12,928.70

Step by Step Solution

1. Step 1: Write the proportion equation
   23,538.84 : 32,484.16 = 12,928.70 : x
2. Step 2: Convert to fraction form
   23,538.84/32,484.16 = 12,928.70/x
3. Step 3: Cross multiply
   23,538.84x = 32,484.16 × 12,928.70
4. Step 4: Simplify right side
   23,538.84x = 419,977,959.39
5. Step 5: Solve for x
   x = 419,977,959.39/23,538.84
6. Step 6: Final answer
   x = 17,841.91