Finding the Fourth Proportional to 13,029.50, 19,570.49 and 7,774.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,029.50 : 19,570.49 = 7,774.79 : x
2. Step 2: Convert to fraction form
   13,029.50/19,570.49 = 7,774.79/x
3. Step 3: Cross multiply
   13,029.50x = 19,570.49 × 7,774.79
4. Step 4: Simplify right side
   13,029.50x = 152,156,411.07
5. Step 5: Solve for x
   x = 152,156,411.07/13,029.50
6. Step 6: Final answer
   x = 11,677.84