Finding the Fourth Proportional to 7,752.76, 10,698.71 and 4,215.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,752.76 : 10,698.71 = 4,215.89 : x
2. Step 2: Convert to fraction form
   7,752.76/10,698.71 = 4,215.89/x
3. Step 3: Cross multiply
   7,752.76x = 10,698.71 × 4,215.89
4. Step 4: Simplify right side
   7,752.76x = 45,104,590.17
5. Step 5: Solve for x
   x = 45,104,590.17/7,752.76
6. Step 6: Final answer
   x = 5,817.88