Finding the Fourth Proportional to 13,139.31, 19,710.24 and 4,817.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,139.31 : 19,710.24 = 4,817.32 : x
2. Step 2: Convert to fraction form
   13,139.31/19,710.24 = 4,817.32/x
3. Step 3: Cross multiply
   13,139.31x = 19,710.24 × 4,817.32
4. Step 4: Simplify right side
   13,139.31x = 94,950,576.89
5. Step 5: Solve for x
   x = 94,950,576.89/13,139.31
6. Step 6: Final answer
   x = 7,226.45