Finding the Fourth Proportional to 28,139.00, 42,205.23 and 7,364.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,139.00 : 42,205.23 = 7,364.12 : x
2. Step 2: Convert to fraction form
   28,139.00/42,205.23 = 7,364.12/x
3. Step 3: Cross multiply
   28,139.00x = 42,205.23 × 7,364.12
4. Step 4: Simplify right side
   28,139.00x = 310,804,167.32
5. Step 5: Solve for x
   x = 310,804,167.32/28,139.00
6. Step 6: Final answer
   x = 11,045.32