Finding the Fourth Proportional to 21,099.60, 31,655.16 and 7,061.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,099.60 : 31,655.16 = 7,061.94 : x
2. Step 2: Convert to fraction form
   21,099.60/31,655.16 = 7,061.94/x
3. Step 3: Cross multiply
   21,099.60x = 31,655.16 × 7,061.94
4. Step 4: Simplify right side
   21,099.60x = 223,546,840.61
5. Step 5: Solve for x
   x = 223,546,840.61/21,099.60
6. Step 6: Final answer
   x = 10,594.84