Finding the Fourth Proportional to 11,011.59, 16,501.86 and 8,534.81

Step by Step Solution

1. Step 1: Write the proportion equation
   11,011.59 : 16,501.86 = 8,534.81 : x
2. Step 2: Convert to fraction form
   11,011.59/16,501.86 = 8,534.81/x
3. Step 3: Cross multiply
   11,011.59x = 16,501.86 × 8,534.81
4. Step 4: Simplify right side
   11,011.59x = 140,840,281.00
5. Step 5: Solve for x
   x = 140,840,281.00/11,011.59
6. Step 6: Final answer
   x = 12,790.19