Finding the Fourth Proportional to 13,909.32, 19,194.12 and 7,940.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,909.32 : 19,194.12 = 7,940.76 : x
2. Step 2: Convert to fraction form
   13,909.32/19,194.12 = 7,940.76/x
3. Step 3: Cross multiply
   13,909.32x = 19,194.12 × 7,940.76
4. Step 4: Simplify right side
   13,909.32x = 152,415,900.33
5. Step 5: Solve for x
   x = 152,415,900.33/13,909.32
6. Step 6: Final answer
   x = 10,957.83