Finding the Fourth Proportional to 9,921.90, 14,875.54 and 4,731.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,921.90 : 14,875.54 = 4,731.42 : x
2. Step 2: Convert to fraction form
   9,921.90/14,875.54 = 4,731.42/x
3. Step 3: Cross multiply
   9,921.90x = 14,875.54 × 4,731.42
4. Step 4: Simplify right side
   9,921.90x = 70,382,427.47
5. Step 5: Solve for x
   x = 70,382,427.47/9,921.90
6. Step 6: Final answer
   x = 7,093.64