Finding the Fourth Proportional to 10,928.34, 16,392.69 and 3,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,928.34 : 16,392.69 = 3,136.50 : x
2. Step 2: Convert to fraction form
   10,928.34/16,392.69 = 3,136.50/x
3. Step 3: Cross multiply
   10,928.34x = 16,392.69 × 3,136.50
4. Step 4: Simplify right side
   10,928.34x = 51,415,672.19
5. Step 5: Solve for x
   x = 51,415,672.19/10,928.34
6. Step 6: Final answer
   x = 4,704.80