Finding the Fourth Proportional to 3,889.35, 5,368.46 and 3,690.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,889.35 : 5,368.46 = 3,690.93 : x
2. Step 2: Convert to fraction form
   3,889.35/5,368.46 = 3,690.93/x
3. Step 3: Cross multiply
   3,889.35x = 5,368.46 × 3,690.93
4. Step 4: Simplify right side
   3,889.35x = 19,814,591.61
5. Step 5: Solve for x
   x = 19,814,591.61/3,889.35
6. Step 6: Final answer
   x = 5,094.58