Finding the Fourth Proportional to 13,061.60, 19,557.84 and 6,892.64

Step by Step Solution

1. Step 1: Write the proportion equation
   13,061.60 : 19,557.84 = 6,892.64 : x
2. Step 2: Convert to fraction form
   13,061.60/19,557.84 = 6,892.64/x
3. Step 3: Cross multiply
   13,061.60x = 19,557.84 × 6,892.64
4. Step 4: Simplify right side
   13,061.60x = 134,805,150.30
5. Step 5: Solve for x
   x = 134,805,150.30/13,061.60
6. Step 6: Final answer
   x = 10,320.72