Finding the Fourth Proportional to 13,909.59, 19,194.57 and 7,622.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,909.59 : 19,194.57 = 7,622.10 : x
2. Step 2: Convert to fraction form
   13,909.59/19,194.57 = 7,622.10/x
3. Step 3: Cross multiply
   13,909.59x = 19,194.57 × 7,622.10
4. Step 4: Simplify right side
   13,909.59x = 146,302,932.00
5. Step 5: Solve for x
   x = 146,302,932.00/13,909.59
6. Step 6: Final answer
   x = 10,518.13