Finding the Fourth Proportional to 12,591.29, 18,870.75 and 5,200.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.29 : 18,870.75 = 5,200.94 : x
2. Step 2: Convert to fraction form
   12,591.29/18,870.75 = 5,200.94/x
3. Step 3: Cross multiply
   12,591.29x = 18,870.75 × 5,200.94
4. Step 4: Simplify right side
   12,591.29x = 98,145,638.51
5. Step 5: Solve for x
   x = 98,145,638.51/12,591.29
6. Step 6: Final answer
   x = 7,794.72