Finding the Fourth Proportional to 12,730.39, 19,058.63 and 7,784.93

Step by Step Solution

1. Step 1: Write the proportion equation
   12,730.39 : 19,058.63 = 7,784.93 : x
2. Step 2: Convert to fraction form
   12,730.39/19,058.63 = 7,784.93/x
3. Step 3: Cross multiply
   12,730.39x = 19,058.63 × 7,784.93
4. Step 4: Simplify right side
   12,730.39x = 148,370,109.17
5. Step 5: Solve for x
   x = 148,370,109.17/12,730.39
6. Step 6: Final answer
   x = 11,654.80