Finding the Fourth Proportional to 21,045.77, 31,544.81 and 7,002.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,045.77 : 31,544.81 = 7,002.50 : x
2. Step 2: Convert to fraction form
   21,045.77/31,544.81 = 7,002.50/x
3. Step 3: Cross multiply
   21,045.77x = 31,544.81 × 7,002.50
4. Step 4: Simplify right side
   21,045.77x = 220,892,339.29
5. Step 5: Solve for x
   x = 220,892,339.29/21,045.77
6. Step 6: Final answer
   x = 10,495.81