Finding the Fourth Proportional to 10,263.34, 15,404.73 and 5,072.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,263.34 : 15,404.73 = 5,072.86 : x
2. Step 2: Convert to fraction form
   10,263.34/15,404.73 = 5,072.86/x
3. Step 3: Cross multiply
   10,263.34x = 15,404.73 × 5,072.86
4. Step 4: Simplify right side
   10,263.34x = 78,146,038.63
5. Step 5: Solve for x
   x = 78,146,038.63/10,263.34
6. Step 6: Final answer
   x = 7,614.09