Finding the Fourth Proportional to 21,098.61, 31,641.54 and 7,055.03

Step by Step Solution

1. Step 1: Write the proportion equation
   21,098.61 : 31,641.54 = 7,055.03 : x
2. Step 2: Convert to fraction form
   21,098.61/31,641.54 = 7,055.03/x
3. Step 3: Cross multiply
   21,098.61x = 31,641.54 × 7,055.03
4. Step 4: Simplify right side
   21,098.61x = 223,232,066.59
5. Step 5: Solve for x
   x = 223,232,066.59/21,098.61
6. Step 6: Final answer
   x = 10,580.42