Finding the Fourth Proportional to 13,051.28, 18,013.86 and 7,749.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,051.28 : 18,013.86 = 7,749.16 : x
2. Step 2: Convert to fraction form
   13,051.28/18,013.86 = 7,749.16/x
3. Step 3: Cross multiply
   13,051.28x = 18,013.86 × 7,749.16
4. Step 4: Simplify right side
   13,051.28x = 139,592,238.32
5. Step 5: Solve for x
   x = 139,592,238.32/13,051.28
6. Step 6: Final answer
   x = 10,695.67