Finding the Fourth Proportional to 13,038.77, 19,560.89 and 6,464.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,038.77 : 19,560.89 = 6,464.10 : x
2. Step 2: Convert to fraction form
   13,038.77/19,560.89 = 6,464.10/x
3. Step 3: Cross multiply
   13,038.77x = 19,560.89 × 6,464.10
4. Step 4: Simplify right side
   13,038.77x = 126,443,638.56
5. Step 5: Solve for x
   x = 126,443,638.56/13,038.77
6. Step 6: Final answer
   x = 9,697.51