Finding the Fourth Proportional to 13,061.40, 19,586.43 and 4,738.65

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.40 : 19,586.43 = 4,738.65 : x
2. Step 2: Convert to fraction form
   13,061.40/19,586.43 = 4,738.65/x
3. Step 3: Cross multiply
   13,061.40x = 19,586.43 × 4,738.65
4. Step 4: Simplify right side
   13,061.40x = 92,813,236.52
5. Step 5: Solve for x
   x = 92,813,236.52/13,061.40
6. Step 6: Final answer
   x = 7,105.92