Finding the Fourth Proportional to 13,017.31, 19,525.79 and 3,156.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,017.31 : 19,525.79 = 3,156.67 : x
2. Step 2: Convert to fraction form
   13,017.31/19,525.79 = 3,156.67/x
3. Step 3: Cross multiply
   13,017.31x = 19,525.79 × 3,156.67
4. Step 4: Simplify right side
   13,017.31x = 61,636,475.52
5. Step 5: Solve for x
   x = 61,636,475.52/13,017.31
6. Step 6: Final answer
   x = 4,734.96