Finding the Fourth Proportional to 7,030.72, 9,701.76 and 3,886.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,030.72 : 9,701.76 = 3,886.72 : x
2. Step 2: Convert to fraction form
   7,030.72/9,701.76 = 3,886.72/x
3. Step 3: Cross multiply
   7,030.72x = 9,701.76 × 3,886.72
4. Step 4: Simplify right side
   7,030.72x = 37,708,024.63
5. Step 5: Solve for x
   x = 37,708,024.63/7,030.72
6. Step 6: Final answer
   x = 5,363.32