Finding the Fourth Proportional to 12,928.58, 19,387.38 and 4,610.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,928.58 : 19,387.38 = 4,610.69 : x
2. Step 2: Convert to fraction form
   12,928.58/19,387.38 = 4,610.69/x
3. Step 3: Cross multiply
   12,928.58x = 19,387.38 × 4,610.69
4. Step 4: Simplify right side
   12,928.58x = 89,389,199.09
5. Step 5: Solve for x
   x = 89,389,199.09/12,928.58
6. Step 6: Final answer
   x = 6,914.08