Finding the Fourth Proportional to 13,978.32, 19,285.02 and 7,927.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978.32 : 19,285.02 = 7,927.80 : x
2. Step 2: Convert to fraction form
   13,978.32/19,285.02 = 7,927.80/x
3. Step 3: Cross multiply
   13,978.32x = 19,285.02 × 7,927.80
4. Step 4: Simplify right side
   13,978.32x = 152,887,781.56
5. Step 5: Solve for x
   x = 152,887,781.56/13,978.32
6. Step 6: Final answer
   x = 10,937.49