Finding the Fourth Proportional to 13,909.47, 19,195.89 and 7,943.01

Step by Step Solution

1. Step 1: Write the proportion equation
   13,909.47 : 19,195.89 = 7,943.01 : x
2. Step 2: Convert to fraction form
   13,909.47/19,195.89 = 7,943.01/x
3. Step 3: Cross multiply
   13,909.47x = 19,195.89 × 7,943.01
4. Step 4: Simplify right side
   13,909.47x = 152,473,146.23
5. Step 5: Solve for x
   x = 152,473,146.23/13,909.47
6. Step 6: Final answer
   x = 10,961.82