Finding the Fourth Proportional to 12,553.83, 18,834.15 and 7,011.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,553.83 : 18,834.15 = 7,011.15 : x
2. Step 2: Convert to fraction form
   12,553.83/18,834.15 = 7,011.15/x
3. Step 3: Cross multiply
   12,553.83x = 18,834.15 × 7,011.15
4. Step 4: Simplify right side
   12,553.83x = 132,049,050.77
5. Step 5: Solve for x
   x = 132,049,050.77/12,553.83
6. Step 6: Final answer
   x = 10,518.63