Finding the Fourth Proportional to 10,290,619.71, 15,432,769.35 and 7,116,145.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290,619.71 : 15,432,769.35 = 7,116,145.47 : x
2. Step 2: Convert to fraction form
   10,290,619.71/15,432,769.35 = 7,116,145.47/x
3. Step 3: Cross multiply
   10,290,619.71x = 15,432,769.35 × 7,116,145.47
4. Step 4: Simplify right side
   10,290,619.71x = 109,821,831,699,557.34
5. Step 5: Solve for x
   x = 109,821,831,699,557.34/10,290,619.71
6. Step 6: Final answer
   x = 10,672,032.86