Finding the Fourth Proportional to 19,978.58, 27,569.52 and 11,474.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,978.58 : 27,569.52 = 11,474.72 : x
2. Step 2: Convert to fraction form
   19,978.58/27,569.52 = 11,474.72/x
3. Step 3: Cross multiply
   19,978.58x = 27,569.52 × 11,474.72
4. Step 4: Simplify right side
   19,978.58x = 316,352,488.07
5. Step 5: Solve for x
   x = 316,352,488.07/19,978.58
6. Step 6: Final answer
   x = 15,834.58