Finding the Fourth Proportional to 9,840.31, 14,764.82 and 5,159.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,840.31 : 14,764.82 = 5,159.20 : x
2. Step 2: Convert to fraction form
   9,840.31/14,764.82 = 5,159.20/x
3. Step 3: Cross multiply
   9,840.31x = 14,764.82 × 5,159.20
4. Step 4: Simplify right side
   9,840.31x = 76,174,659.34
5. Step 5: Solve for x
   x = 76,174,659.34/9,840.31
6. Step 6: Final answer
   x = 7,741.08