Finding the Fourth Proportional to 12,756,667.38, 19,142,969.88 and 5,183,630.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,756,667.38 : 19,142,969.88 = 5,183,630.70 : x
2. Step 2: Convert to fraction form
   12,756,667.38/19,142,969.88 = 5,183,630.70/x
3. Step 3: Cross multiply
   12,756,667.38x = 19,142,969.88 × 5,183,630.70
4. Step 4: Simplify right side
   12,756,667.38x = 99,230,086,359,143.31
5. Step 5: Solve for x
   x = 99,230,086,359,143.31/12,756,667.38
6. Step 6: Final answer
   x = 7,778,684.15