Finding the Fourth Proportional to 10,068.40, 13,893.80 and 5,591.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,068.40 : 13,893.80 = 5,591.89 : x
2. Step 2: Convert to fraction form
   10,068.40/13,893.80 = 5,591.89/x
3. Step 3: Cross multiply
   10,068.40x = 13,893.80 × 5,591.89
4. Step 4: Simplify right side
   10,068.40x = 77,692,601.28
5. Step 5: Solve for x
   x = 77,692,601.28/10,068.40
6. Step 6: Final answer
   x = 7,716.48