Finding the Fourth Proportional to 13,047.32, 19,562.48 and 8,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,047.32 : 19,562.48 = 8,591.50 : x
2. Step 2: Convert to fraction form
   13,047.32/19,562.48 = 8,591.50/x
3. Step 3: Cross multiply
   13,047.32x = 19,562.48 × 8,591.50
4. Step 4: Simplify right side
   13,047.32x = 168,071,046.92
5. Step 5: Solve for x
   x = 168,071,046.92/13,047.32
6. Step 6: Final answer
   x = 12,881.65