Finding the Fourth Proportional to 13,059.86, 18,022.28 and 7,470.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,059.86 : 18,022.28 = 7,470.50 : x
2. Step 2: Convert to fraction form
   13,059.86/18,022.28 = 7,470.50/x
3. Step 3: Cross multiply
   13,059.86x = 18,022.28 × 7,470.50
4. Step 4: Simplify right side
   13,059.86x = 134,635,442.74
5. Step 5: Solve for x
   x = 134,635,442.74/13,059.86
6. Step 6: Final answer
   x = 10,309.10