Finding the Fourth Proportional to 13,256.49, 19,861.34 and 7,002.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,256.49 : 19,861.34 = 7,002.69 : x
2. Step 2: Convert to fraction form
   13,256.49/19,861.34 = 7,002.69/x
3. Step 3: Cross multiply
   13,256.49x = 19,861.34 × 7,002.69
4. Step 4: Simplify right side
   13,256.49x = 139,082,697.51
5. Step 5: Solve for x
   x = 139,082,697.51/13,256.49
6. Step 6: Final answer
   x = 10,491.67