Finding the Fourth Proportional to 13,479.33, 18,601.23 and 7,510.87

Step by Step Solution

1. Step 1: Write the proportion equation
   13,479.33 : 18,601.23 = 7,510.87 : x
2. Step 2: Convert to fraction form
   13,479.33/18,601.23 = 7,510.87/x
3. Step 3: Cross multiply
   13,479.33x = 18,601.23 × 7,510.87
4. Step 4: Simplify right side
   13,479.33x = 139,711,471.35
5. Step 5: Solve for x
   x = 139,711,471.35/13,479.33
6. Step 6: Final answer
   x = 10,364.87