Finding the Fourth Proportional to 12,802.52, 19,206.40 and 7,258.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,802.52 : 19,206.40 = 7,258.34 : x
2. Step 2: Convert to fraction form
   12,802.52/19,206.40 = 7,258.34/x
3. Step 3: Cross multiply
   12,802.52x = 19,206.40 × 7,258.34
4. Step 4: Simplify right side
   12,802.52x = 139,406,581.38
5. Step 5: Solve for x
   x = 139,406,581.38/12,802.52
6. Step 6: Final answer
   x = 10,889.00