Finding the Fourth Proportional to 12,928.62, 19,392.72 and 7,370.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,928.62 : 19,392.72 = 7,370.10 : x
2. Step 2: Convert to fraction form
   12,928.62/19,392.72 = 7,370.10/x
3. Step 3: Cross multiply
   12,928.62x = 19,392.72 × 7,370.10
4. Step 4: Simplify right side
   12,928.62x = 142,926,285.67
5. Step 5: Solve for x
   x = 142,926,285.67/12,928.62
6. Step 6: Final answer
   x = 11,055.03