Finding the Fourth Proportional to 19,830.42, 27,364.59 and 10,877.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,830.42 : 27,364.59 = 10,877.72 : x
2. Step 2: Convert to fraction form
   19,830.42/27,364.59 = 10,877.72/x
3. Step 3: Cross multiply
   19,830.42x = 27,364.59 × 10,877.72
4. Step 4: Simplify right side
   19,830.42x = 297,664,211.11
5. Step 5: Solve for x
   x = 297,664,211.11/19,830.42
6. Step 6: Final answer
   x = 15,010.48