Finding the Fourth Proportional to 19,326.09, 28,947.47 and 13,051.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,326.09 : 28,947.47 = 13,051.61 : x
2. Step 2: Convert to fraction form
   19,326.09/28,947.47 = 13,051.61/x
3. Step 3: Cross multiply
   19,326.09x = 28,947.47 × 13,051.61
4. Step 4: Simplify right side
   19,326.09x = 377,810,976.82
5. Step 5: Solve for x
   x = 377,810,976.82/19,326.09
6. Step 6: Final answer
   x = 19,549.27