Finding the Fourth Proportional to 10,381.61, 15,566.43 and 7,098.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,381.61 : 15,566.43 = 7,098.68 : x
2. Step 2: Convert to fraction form
   10,381.61/15,566.43 = 7,098.68/x
3. Step 3: Cross multiply
   10,381.61x = 15,566.43 × 7,098.68
4. Step 4: Simplify right side
   10,381.61x = 110,501,105.31
5. Step 5: Solve for x
   x = 110,501,105.31/10,381.61
6. Step 6: Final answer
   x = 10,643.93