Finding the Fourth Proportional to 13,051.32, 19,577.82 and 5,259.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,051.32 : 19,577.82 = 5,259.96 : x
2. Step 2: Convert to fraction form
   13,051.32/19,577.82 = 5,259.96/x
3. Step 3: Cross multiply
   13,051.32x = 19,577.82 × 5,259.96
4. Step 4: Simplify right side
   13,051.32x = 102,978,550.09
5. Step 5: Solve for x
   x = 102,978,550.09/13,051.32
6. Step 6: Final answer
   x = 7,890.28