Finding the Fourth Proportional to 5,429.72, 7,492.38 and 3,071.84

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429.72 : 7,492.38 = 3,071.84 : x
2. Step 2: Convert to fraction form
   5,429.72/7,492.38 = 3,071.84/x
3. Step 3: Cross multiply
   5,429.72x = 7,492.38 × 3,071.84
4. Step 4: Simplify right side
   5,429.72x = 23,015,392.58
5. Step 5: Solve for x
   x = 23,015,392.58/5,429.72
6. Step 6: Final answer
   x = 4,238.78