Finding the Fourth Proportional to 13,005.90, 19,470.56 and 8,059.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,005.90 : 19,470.56 = 8,059.62 : x
2. Step 2: Convert to fraction form
   13,005.90/19,470.56 = 8,059.62/x
3. Step 3: Cross multiply
   13,005.90x = 19,470.56 × 8,059.62
4. Step 4: Simplify right side
   13,005.90x = 156,925,314.79
5. Step 5: Solve for x
   x = 156,925,314.79/13,005.90
6. Step 6: Final answer
   x = 12,065.70