Finding the Fourth Proportional to 12,900,377.28, 19,353,365.28 and 3,924,696

Step by Step Solution

1. Step 1: Write the proportion equation
   12,900,377.28 : 19,353,365.28 = 3,924,696 : x
2. Step 2: Convert to fraction form
   12,900,377.28/19,353,365.28 = 3,924,696/x
3. Step 3: Cross multiply
   12,900,377.28x = 19,353,365.28 × 3,924,696
4. Step 4: Simplify right side
   12,900,377.28x = 75,956,075,300,954.89
5. Step 5: Solve for x
   x = 75,956,075,300,954.89/12,900,377.28
6. Step 6: Final answer
   x = 5,887,895.65